Larry Grim trains a goat on an electronic dog fence on a farm in Lehigh CountyMy name is Lawrence Grim. I am the owner of Canine Safety Systems. I have over 32 years experience in the pet containment industry and have personally provided outstanding service to over 10,000 families since I started in 1986.

I hold a four-year degree from Delaware Valley College in Animal Science and an additional two years of Veterinary Technician experience from the Lansdale Veterinary Clinic. It was this time while I was with the veterinary clinic and living in the Gilbertsville area, coupled with the wrongful death of my own dog, that I was driven to find a better way to stop pets from venturing into trouble.

In 1986, a position came up for a manager/installer for an Invisible Fence® dealership at Fence City, a regular fence company in Montgomeryville, Pa. It was the third Invisible Fence®dealership set up by John Purtell and he had been selling the systems for six years. I was lucky enough to get the job and immediately loved it.  I had relatively few problems with the product or the factory, and all the equipment was made in PA. I worked there as the Invisible Fence® manager for nine years. When John Purtell left the company, things seemed to get worse for us. The Fence City dealership eventually decided to get out of the electronic containment business.


I immediately started my own company, Canine Safety Systems, and signed on with a different supplier for my equipment. After six long years, the China-produced product we were using had become less and less reliable. My wife and I desperately needed a new and better product to keep “our” dogs safe. We even tried to “fix” problems with that company by flying out to the factory, but we were unsuccessful. Then, when things were at their worst, John Purtell called us on the phone! He explained he had signed on as the president of a new company called Pet Stop®. We were happy to hear what he had to say and quickly scheduled a meeting. On the night of that meeting, he was only too happy to go out and install a Pet Stop®system to fix the problems we were having with one of our newly installed China made systems! Realizing his dedication was the same as ours, we signed on with Pet Stop® . In 2001, we became the fourteenth dealer signed.



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PetStop® is a registered trademark of Perimeter Technologies, Inc. All references to Invisible Fence® and Invisible Fencing® on this website refer to registered trademarks of Invisible Fence Company. All references to PetSafe® on this website refer to registered trademarks of Radio Systems Corporation. CanineSafety.Com makes no claims of being an authorized dealer of Invisible Fence®, DogWatch®, DogGuard®, or Contain-A-Pet®. We are not an authorized dealer of any of the aforementioned companies. Invisible Fence® and Invisible Fencing® are registered trademarks of Invisible Fence Company. DogWatch® is a registered trademark of Dog Watch Inc. Dog Guard® is a registered trademark of Sunward Electronics® Contain-A-Pet® is a registered trademark of Contain A Pet America Inc. CanineSafety.Com is an authorized dealer for Pet Stop® brand pet fencing and products.