I use the Sorestro collar on my two dogs. They work really good. However... You need to make sure you have a real one... they make a large amount of counterfeit Sorestro collars... If you look on the internet there are several places that can show you what to look for in the fake collars.
I bought a couple of fakes off ebay....only way I knew they were fake was because my dogs got fleas. I always keep one of the cans and write the date on it so I can keep up with when it's time to change the collar. I called Sorestro and they identified it as fake from the numbers on the can and the markings on the collars.
Sorestro told me the only way to be sure you get the real collar is to buy from a place like Petco or Petsmart because Sorestro only sells to big companies.
Only deals on Sorestro collars are on fake collars.
