The Ultimate Invisible™ Dog Fence FAQ Library

Straight Answers From John Wasilishen

I have been professionally training dogs and helping New Jersey families create safer outdoor freedom since 1993. In that time, I have heard just about every question imaginable about Invisible™ Dog Fence systems, hidden dog fences, underground fences, electric dog fences, GPS collars, training, repairs, batteries, puppies, stubborn dogs, nervous dogs, and the occasional dog who thinks the rules were written for somebody else.

This page is my honest, plain-English guide. I am not here to convince every family that an underground pet containment system is the only answer. It is not. I am here to explain how these systems work, where they work well, what can go wrong, and why professional training matters just as much as the equipment.

Every dog is different. Every property is different. The best solution starts with understanding both.

Use the questions below to learn the basics, compare your options, and decide what makes sense for your family. When a question requires seeing the yard or meeting the dog, I will say that too. Sometimes the most professional answer is not a sales pitch. It is, ‘Let me take a look.’

1. Understanding Invisible™ and Underground Dog Fences

1. What is an Invisible™ Dog Fence?

An Invisible™ Dog Fence is an electronic pet containment system that creates a defined boundary without a traditional physical fence. A transmitter sends a signal through a buried boundary wire, and the dog wears a compatible receiver collar. The collar provides a warning and, when properly set, a correction if the dog continues toward the boundary. The system is only one part of the solution; the dog must also be trained to understand what the boundary means.

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2. Is an Invisible™ Dog Fence the same as a hidden dog fence?

People often use Invisible™ Dog Fence, hidden dog fence, underground dog fence, electric dog fence, and electronic pet containment system to describe the same general category. Product quality, installation methods, collar design, training, warranties, and support can vary greatly between companies.

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3. Does the fence actually keep my dog in the yard?

A properly designed, installed, fitted, and trained system can provide highly dependable containment for many dogs. No system should be described as magic or treated as a substitute for responsible ownership. Success depends on the equipment, the layout, the dog, the training, and the family’s follow-through.

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4. Is there a physical barrier?

No. The boundary is electronic, not physical. That preserves the open appearance of the property, but it also means outside animals and people can still enter the yard.

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5. Why do families choose an underground fence instead of a traditional fence?

Common reasons include preserving views, containing dogs on large or irregular properties, avoiding restrictions on visible fencing, protecting multiple areas, and creating a boundary where a physical fence would be difficult or unattractive.

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6. Can an Invisible™ Dog Fence replace supervision?

No. It can provide valuable freedom and containment, but families should still supervise appropriately, maintain the equipment, monitor the dog’s health and behavior, and use common sense around severe weather, wildlife, contractors, gates, and unusual situations.

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7. Will the system work during a power outage?

Most wired systems depend on household power. A properly functioning backup battery may maintain operation for a limited period, depending on the equipment. Owners should know what their system does during an outage and check it after power is restored.

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8. Does the wire carry electricity that can hurt someone?

The buried boundary wire carries a low-level radio signal, not household electrical current. It should still be installed and serviced correctly, especially near utilities, irrigation, lighting, and other buried lines.

2. Installation and Property Design

9. How is an underground dog fence installed?

A boundary wire is installed around the approved containment area and connected to a transmitter, commonly located in a garage or basement. The system is tested, flags are placed to make the invisible boundary visible during training, and the receiver collar is fitted and programmed for the individual dog.

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10. How long does installation take?

Many residential installations can be completed in a few hours, but property size, surfaces, driveway crossings, landscaping, existing systems, weather, and layout complexity can change the timeline.

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11. Will installation damage my lawn?

Professional installation is designed to minimize disruption. A narrow line may be visible temporarily, but most lawns recover naturally. Hard surfaces, mature roots, irrigation, and specialized landscaping require additional planning.

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12. Can the wire cross a driveway?

Yes. The proper method depends on whether the driveway is asphalt, concrete, pavers, gravel, or another surface. The goal is a reliable crossing with as little visible disruption as practical.

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13. Can you work around sprinklers, utilities, and landscape lighting?

Usually, yes, but the property owner should identify known private lines and systems. Public utility marking does not normally identify every privately installed irrigation, lighting, septic, or drainage line.

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14. Can the fence protect only the backyard?

Often, yes. A backyard-only layout can be useful where the front yard is busy or where the family prefers controlled access. The exact design depends on the home, driveway, side-yard width, and transmitter location.

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15. Can the system include both the front and backyard?

Yes. A full-property loop is common when the layout and access points support it. We also plan how the dog will move between areas and how the family will take the dog across the boundary for walks or travel.

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16. Can certain areas be excluded?

Many systems can create exclusion zones around pools, gardens, play areas, docks, barns, driveways, or other features. Complex layouts need careful design so signals do not create unintended dead zones or confusing boundary areas.

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17. Can it work on a small lot?

Yes. Small lots can work very well, but boundary width, the home’s position, sidewalks, neighboring properties, and usable space must be evaluated carefully.

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18. Can it work on several acres?

Yes, many professionally installed systems can cover larger properties. Equipment capacity, wire gauge, terrain, outbuildings, long driveways, wooded edges, and service access all matter.

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19. Can it work on waterfront property?

Yes. Waterfront layouts may be designed to protect bulkheads, docks, pools, shorelines, and access areas. Water-loving dogs are often very talented at finding the one place nobody planned for, so the layout deserves extra thought.

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20. Can the boundary be changed later?

Yes. A professional can often expand, reduce, or reroute the boundary when a family adds a pool, patio, addition, garden, driveway, or new outdoor use area.

3. Dog Training and Pro-Start™ Containment Conditioning

21. Why is training necessary if the collar already works?

Because a dog should understand the boundary before being expected to respect it. Training connects the flags, warning signal, collar sensation, handler guidance, and safe return toward the yard. Without clear teaching, the system becomes a surprise instead of communication.

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22. What is Pro-Start™ Containment Conditioning?

It is my structured process for introducing the dog to the boundary in a fair, gradual, and understandable way. The exact pace and settings are adjusted to the dog’s age, temperament, confidence, drive, and learning history.

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23. Do you train the dog on the day of installation?

Initial training commonly begins the same day when appropriate. The first goal is not to test the dog or prove the system works. The goal is to begin creating a clear association and show the family how to continue safely.

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24. How long does training take?

Many dogs begin understanding quickly, but dependable freedom develops over time. Some dogs progress in days; others need a more gradual process. I care more about clarity and confidence than winning a race against the calendar.

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25. Will my dog be afraid of the yard?

That should not be the goal or the normal result of thoughtful training. The dog should learn where the boundary is and how to move back toward safety. Rushing, poor collar fit, excessive settings, or unclear handling can create unnecessary worry.

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26. Do you use the highest correction to make sure the dog learns?

No. The setting should be effective and appropriate, not dramatic. Bigger is not automatically better. The goal is communication, not proving that the collar has a volume knob.

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27. What if my dog runs through the boundary?

Stop unsupervised freedom and return to structured training. Check collar fit, battery, settings, wire operation, distraction level, and training consistency. A breakthrough is information: something in the system or training plan needs attention.

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28. How do you train around deer, squirrels, and other dogs?

Distractions are introduced gradually after the dog understands the basic boundary. We proof the dog around realistic situations at a level the dog can process, rather than waiting for a deer to schedule the final exam.

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29. How does my dog leave the property for a walk?

Families are taught a consistent exit routine, such as removing the receiver collar and using a designated driveway or carried/vehicle exit. The routine should be clear so the dog does not become confused about when the boundary applies.

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30. Can children help with the training?

Children can participate in age-appropriate ways under adult supervision, but an adult should be responsible for the training plan, collar fit, settings, and daily safety decisions.

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31. What if my dog is nervous or sensitive?

Sensitive dogs often do well when the introduction is slower, the handler is calm, and the training is individualized. Temperament matters more than stereotypes about breed or size.

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32. What if my dog is stubborn?

I usually replace the word stubborn with a better question: what is motivating the dog, and what part of the communication is unclear? Strong, confident dogs may require more proofing, but they still learn best through consistency rather than frustration.

4. Puppies, Older Dogs, Breeds and Multiple Dogs

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33. How old should a puppy be before training on an Invisible™ Dog Fence?

There is no responsible one-age-fits-all answer. Physical development, confidence, basic leash handling, maturity, size, and temperament all matter. Very young puppies need foundation training and supervision before electronic boundary work is considered.

34. Can an older dog learn the system?

Yes. Older dogs can learn new boundaries, provided their hearing, vision, mobility, cognitive health, and overall medical condition are considered.

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35. Do small dogs need a different system?

Small dogs need appropriately sized equipment, careful collar fit, suitable contact points, and conservative programming. Weight alone does not determine temperament or sensitivity.

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36. Can large or powerful breeds be contained?

Many large and powerful breeds do extremely well with proper equipment and professional training. Drive, speed, confidence, coat, pain sensitivity, and distraction level matter more than size alone.

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37. Does it work for German Shepherds, Huskies, hounds, or terriers?

It can. Working breeds, northern breeds, scent hounds, and terriers may present different motivations and distraction patterns. That means the training should be individualized, not that the dog is automatically a bad candidate.

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38. Can a thick-coated dog feel the collar?

Yes, when the receiver is fitted correctly and the proper contact points are used. Thick coats can interfere with contact, so fit must be checked rather than simply tightening the collar until everyone is unhappy.

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39. Can multiple dogs share one system?

Yes. Each dog wears its own compatible receiver collar, and each dog should be trained individually before the group is given freedom together.

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40. Can dogs with very different personalities use the same boundary?

Yes. The boundary can be shared, while collar settings, pace, handling, and proofing are customized for each dog.

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41. Can a dog with hearing loss use the system?

Possibly, but the training plan and receiver features must be evaluated carefully. A dog that cannot hear the warning tone may require a different communication approach and veterinary input where appropriate.

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42. Is an electronic fence appropriate for every dog?

No. Some medical, behavioral, neurological, sensory, or environmental situations may make another solution safer. A professional should be willing to say when the system is not the right fit.

5. Receiver Collars, Batteries and Comfort

43. Does my dog wear the receiver collar all day?

The receiver should be worn according to the manufacturer’s guidance and removed regularly so the skin can be checked and the dog can have collar-free time. It should not be left on continuously for days.

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44. How tight should the collar be?

It must be snug enough for both contact points to touch the skin consistently without being excessively tight. Fit should be checked regularly because coat, weight, activity, and growth can change it.

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45. Can the collar cause skin irritation?

Any contact-point collar can cause irritation if it is too tight, worn too long, dirty, poorly fitted, or left on wet skin. Regular removal, skin checks, cleaning, correct fit, and appropriate contact points reduce risk.

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46. What are Comfort Contacts™?

Comfort Contacts™ are specialty contact points designed to improve contact and comfort for certain dogs. They are not a substitute for correct fit or regular skin checks.

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47. How often do batteries need to be changed or charged?

That depends on the receiver model and battery type. Follow the current manufacturer schedule and do not wait for a containment failure to become the reminder.

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48. How do I know whether the receiver is working?

Use the approved test method for the specific equipment, check battery status, confirm the transmitter is operating, and inspect the collar. Never test the correction on a person or guess based only on the warning tone.

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49. Can my dog swim with the receiver collar?

Many receivers are water-resistant or waterproof, but specifications vary. Confirm the exact model rating, rinse after saltwater exposure when recommended, and inspect the collar and skin after swimming.

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50. Can I buy a replacement collar online?

Sometimes, but compatibility matters. A receiver that looks similar may not work with the transmitter or may use different frequencies, settings, or batteries. Confirm compatibility before purchasing.

6. Safety, Behavior and Everyday Use

51. Can another dog enter my yard?

Yes. An electronic boundary contains the trained dog but does not physically block loose dogs, wildlife, or people from entering. Supervision is especially important where outside animals are a concern.

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52. Will the fence stop my dog from biting someone who enters the yard?

No containment system replaces behavior evaluation, management, supervision, secure physical barriers where necessary, or professional help for aggression. Dogs with bite risk require a broader safety plan.

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53. Can my dog chase a deer through the boundary?

A highly motivated dog can challenge any system if equipment, fit, settings, or training are inadequate. That is why realistic distraction proofing and ongoing maintenance matter.

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54. What happens if my dog crosses the boundary?

Depending on the system, the receiver may continue communicating within the signal field. The dog should be trained to return toward the safe area. Never encourage a dog to remain outside the boundary wearing an active receiver.

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55. Is the correction painful?

The receiver delivers an electronic stimulation intended to interrupt and communicate, not injure. Sensation varies by setting, collar fit, coat, moisture, and individual sensitivity. It should be programmed responsibly and introduced through training.

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56. Can the system make aggression worse?

Poor timing, unclear training, or using the boundary in a high-conflict situation can contribute to stress or negative associations. Dogs with aggression, barrier frustration, or anxiety should be evaluated individually before installation.

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57. What about thunderstorms or severe weather?

Bring dogs inside during dangerous weather. Check the transmitter and system after power interruptions, lightning, flooding, construction, or unusual electrical events.

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58. Can landscapers or contractors damage the wire?

Yes. Aerators, edging, trenching, stump grinding, irrigation work, utility work, and construction can cut or disturb the boundary. Mark the route and tell contractors before work begins.

7. Repairs, Wire Breaks and Existing Systems

59. How do I know if the boundary wire is broken?

Many transmitters sound an alarm or show a fault when the loop is open. A professional can test the transmitter, wire, splices, surge protection, and receiver to isolate the problem.

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60. Can you find a wire break without replacing the entire system?

Often, yes. Professional locating equipment can narrow the problem and allow a localized repair. Multiple old splices, deteriorated wire, or major construction damage may justify partial or full replacement.

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61. Do you repair systems installed by other companies?

Yes. We troubleshoot and repair many brands and types of professionally installed underground dog fence systems, subject to parts availability and compatibility.

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62. What commonly causes wire breaks?

Landscaping, edging, aeration, driveway work, utility work, animals, tree roots, poor splices, aging wire, construction, and previous repairs are common causes.

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63. Can lightning damage the system?

Yes. Lightning and power surges can damage transmitters, surge protection, wiring, and connected equipment. Proper protection reduces risk but cannot eliminate every severe event.

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64. Should I repair or replace an older system?

That depends on the transmitter, wire condition, receiver compatibility, repair history, coverage needs, and cost. I prefer an honest repair when it makes sense and replacement when the old system is becoming a recurring science project.

65. Can you reuse an existing boundary wire?

Sometimes. The wire should be tested for continuity, insulation integrity, route, and suitability. Reusing a good loop can reduce disruption and cost.

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66. What should I do before calling for service?

Check household power, transmitter indicators, backup battery status, receiver battery, collar condition, and whether recent yard work occurred. Do not repeatedly change settings without knowing the cause.

8. GPS, Wireless and DIY Systems

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67. How is a wired system different from a GPS dog fence?

A wired system creates a fixed boundary based on an installed loop. A GPS system calculates a virtual boundary through satellite positioning. GPS offers portability, while a professionally installed wired system generally provides a consistent boundary tied to the property.

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68. Can GPS boundaries drift?

GPS position accuracy can vary due to satellite visibility, buildings, trees, terrain, atmospheric conditions, device design, and software. Families should understand the specific product’s expected accuracy and limitations.

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69. Are circular wireless fences the same as underground fences?

No. Many wireless systems create a circular area around a transmitter. That can be convenient, but it may not match the property shape and can be affected by building materials, terrain, and transmitter placement.

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70. Are DIY dog fences cheaper?

The equipment may cost less upfront, but the family is responsible for layout, wire installation, signal troubleshooting, collar fit, settings, and training. A low purchase price is not always the same as a low total cost.

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71. Can I install the wire myself and hire you only for training?

Possibly, but the system should first be tested and the layout reviewed. Training cannot correct a confusing signal pattern, poor splice, dead zone, or unreliable boundary.

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72. Which is better: wired, GPS, wireless, or physical fencing?

The best choice depends on the property, dog, travel needs, budget, neighborhood restrictions, risk level, and family preferences. Sometimes the right answer is a combination of systems.

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73. Do app-based systems require subscriptions?

Some do. Subscription costs, cellular coverage, app reliability, battery charging, software support, and device replacement should be considered before choosing a system.

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74. Why choose professional installation instead of a national franchise or DIY kit?

A strong local provider can offer custom design, direct access, hands-on dog training, repair knowledge, and long-term support. The value is not just the box. It is the experience behind the entire system.

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9. Pricing, Warranty and Support

75. How much does an Invisible™ Dog Fence cost?

Price depends on property size, layout complexity, surfaces, equipment, number of dogs, existing wiring, and optional features. A responsible estimate should be based on the actual property and needs—not a number pulled from thin air.

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76. Is there an ongoing monthly fee?

Many professionally installed wired systems do not require a monthly subscription. Batteries, replacement parts, service, or optional products may create future costs. GPS and app-based systems may have subscriptions.

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77. What is included with professional installation?

A complete proposal should clearly state the equipment, boundary installation, receiver collar, flags, initial training, warranty, containment guarantee, follow-up, and any exclusions.

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78. What does a lifetime equipment warranty mean?

Coverage depends on the written terms, covered components, ownership, batteries, misuse, physical damage, lightning, service labor, and other exclusions. Always read the actual warranty rather than relying on the word lifetime by itself.

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79. What is a lifetime containment guarantee?

It generally means the company will continue helping the original customer address containment issues under the written terms. It does not eliminate the owner’s responsibilities for collar fit, battery replacement, training follow-through, maintenance, and notifying the company when a problem occurs.

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80. What support do you provide after installation?

I provide ongoing consultation and practical support by phone, text, email, Zoom, or FaceTime, along with on-site service when needed. The relationship should not end when the flags go into the ground.

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81. Can you help if we move to a new home?

Yes. The new property requires its own design and installation, and the dog should be reintroduced to the new boundary. Dogs do not automatically transfer the old map into the new yard.

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82. Why should I choose ProDogK9 Fence Co.?

Because you receive owner-operated service, more than 30 years of dog training experience, customized installation, Pro-Start™ Containment Conditioning, repair expertise, and ongoing local support. I build systems around dogs and families—not sales quotas.

10. Deciding Whether It Is Right for Your Family

83. What information should I have before requesting an estimate?

Be ready to discuss your address, property size, number of dogs, breeds, ages, medical or behavioral concerns, desired containment area, pools or special features, existing systems, and any known construction or landscaping plans.

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84. Should I wait until my new puppy is older?

You can plan the property early while building leash skills, recall, confidence, and household structure. The timing of electronic boundary training should be based on the individual puppy, not impatience to open the back door.

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85. What questions should I ask any dog fence company?

Ask who performs the installation, who trains the dog, what experience they have with behavior, what equipment is included, how repairs are handled, what the warranty actually covers, what happens after a breakthrough, and whether you can speak directly with the person responsible for the work.

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86. What are red flags when comparing companies?

Be cautious of guaranteed instant results, one-setting-fits-all training, unclear warranty terms, pressure to sign immediately, no plan for repairs, no discussion of the dog’s temperament, or a company that treats training as a five-minute demonstration.

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87. Can you tell me whether my dog is a good candidate over the phone?

I can learn a lot through a conversation, but some situations require seeing the dog, property, or existing equipment. Honest evaluation is more important than forcing a yes.

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88. What is the first step?

Start with a straightforward conversation about your dog, property, goals, and concerns. From there, we can determine whether a professionally installed Invisible™ Dog Fence is a good fit and design the right next step.