Vastar AD890 Dog No Bark Collar Electric Anti Bark Shock Control with 7 Levels Button Adjustable Sensitivity Control, Stimulation of No Harm Warning Beep and Shock for 15-120 lb. Dogs

For the most part, it does it's job. I have three dogs and two of them like to bark at every leaf that moves and bird that goes by. We got two bark collars for those two and at first it was amazing! They did great outside! Then... I went out back and my third dog barked a couple times and I heard the two dog collars go off. When my third dog barked it was shocking the two with the collars on! I felt SO BAD, because while I was gone I have no idea if they were getting shocked and didn't understand why!

Not effective and the batteries don't last at all.

worked great until it malfunctioned and wouldn't stop shocking my 15 pound dog... I could barely get it off because it kept going.. don't know what happened, maybe interference, but I thought there was a safety feature that turns it off temporarily if it gets up to the highest shock level.. haven't used it since... would like a replacement, but unsure if I should even try. I've always heard of things happening to people's dogs when they aren't home... couldn't believe until it happened.. luckily I was close by when it happened.

It's sensor keeps adjusting itself constantly. The thing is constantly beeping even when the dog is not barking.

It did not work for my wiener dog aussie mix. We even trimmed his neck so he could endure a little bit more shook. I was concerned because he has been barking badly at children. I don't have any children of my own but I want to nip this habit ASAP. This product did not work for me. I hope everyone else has better luck than I did.

They both have PET853 stamped on the case, but this one is touted as the "new model". Obviously done to cheat the review system, given the bad ratings of the 880.Not impressed with this kind of dishonesty. In fact most if not all of the collars sold under different names that look like this one are the exact same thing! Same model number and same patent number!

This BURNED our dog!!!! We've had it for a better part of a year but lo and behold, she came in from outside last night and was wiggling and moving like there was a bug on her or something, we looked and it had BURNED through her fur and into her skin! HORRIBLE!