Original review updated by user Apr 21, 2021 Giant Scam I Have 2 dogs this does nothing but blind them, it actually makes my dog that I bought it because of BARK MORE !!!!!! I returned it certified mail. They've had it back almost 10 days no refund. Called customer service they said, "oh yeah we received it". I said, "ok, so when should I look for my funds?" Their response, "Your funds SHOULD be returned in 5-10 days" I said from the 12th when you got it?" Their response "from today" What?!?!?!? Moral of the story: they hadn't even started a return, I'm betting they would have kept my money had I not of called & made them return it!!!!! Giant scam User's recommendation: DON'T WASTE YOUR MONEY OR TIME!!!!