this collar is made from cheap material. split around the tab after 3 weeks - now it is torn into. impossible to contact manufacturer - push buttons and hold - after 20 minutes. i gave up. a total waste of money.
We bought a rat terrier puppy & could not keep the fleas off of him. We treated the yard & used frontline & Adams spray & he still had new fleas everyday. We bought this product from the local pet store & within two days he was flea free. The only reason I didn't give it 5 stars is because he's only had it for a month so I don't know if it last as long as they say.