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Dog Guard of Maryland  Serving MD, VA, and WV.

How Does Dog Guard® Compare to Invisible Fence® Brand

Choosing the right electronic pet containment system can be challenging. We believe Dog Guard® consistently provides not only the most reasonably priced, high-quality electronic pet-containment system, but also industry leading customer service and support from us, your local dealer.

Gradual Correction
No Monthly Fees
Locally Owned & Operated
Designed and Assembled in the U.S.A.
Dog Guard®
FreedomPro™
Invisible Fence® Brand
Boundary Plus Smart® System, Boundary Plus® Wired System, Invisible Fence® GPS Collar
Exclusively Locally-Owned Professional Training & Installation
Some corporately owned locations
Accurate Boundaries
Accuracy varies by system
30-Day Battery Life
Battery life varies by system
No Monthly Fee
Required for some products
Works for Small Yards & Tight Spaces
Assembled in the U.S.A.
Various foreign countries
15 Year Limited Lifetime Warranty
GPS collar has a one-year limited warranty
Ultrasonic Alerts
Ultrasonic sounds that gently alert your dog.
Gradual Correction
Provides dozens of possible intra-zone correction levels. Gentle for most dogs, but tough when necessary.
Set correction levels only
Industry Leading Correction Power for Stubborn Dogs
If needed.
Works with Small Dogs

Boundary Plus® and Boundary Plus Smart® are registered trademarks of Invisible Fence, Inc. The term “invisible fence” is registered and considered a trademark by Invisible Fence, Inc. Electronic pet fences with a buried wire are often referred to as “invisible fences”, but Dog Guard® should not be confused with Invisible Fence, Inc. or the Invisible Fence brand. Halo® is a registered trademark of Protect Animals With Satellites, LLC. Dog Guard® (Sunward Electronics, Inc.) is not affiliated in any way with Invisible Fence, Inc. and Protect Animals With Satellites, LLC. Dog Guard®, Out of Sight Fencing® and FreedomPro™ are trademarks owned by Sunward Electronics, Inc.

Revision Date: 5/30/25