I have had Invisible Fence for almost 30 years. Our house is on a very busy road so having the fence up and working is crucial Over time, the fence has been modified for the various dogs who have been in our lives and been broken during landscape projects. We have also had a few naughty pups who have time and again chewed a collar or receiver. No matter what the problem, the staff at Invisible Fence of the Southern Tier has come to the rescue in a timely manner with a smile on their face. Customer service has been wonderful.