“We rescued Malcolm about 2.5 years ago from an abusive situation. He’s half Border Collie & Boxer. He runs like the wind chasing everything from leaves & squirrels to cars & skateboards. We had doubts whether this kind of product would work for dear Malcolm. Wow!! We’re absolutely stunned, Malcolm is perfectly content to remain on the front porch! He will play in our back yard, but hasn’t chased a car, truck or work crew. The fence caught him one time last week when temptation overtook him when the neighbor was walking her dog. Our neighbor felt so badly for ‘tempting’ him. When Malcolm hit the ‘point of no return’, and a split second run back to the front porch. He looked at me with the look that said, “Mom, I couldn’t help myself. I got it now! Won’t do that again!” He hasn’t!! Our new neighbors have already asked us about our thoughts on Dog Guard!! Dog Guard’s training, service and responsiveness is what a customer desires. 5 stars… hands down!”