Top critical review
They work well, but look for reactions in some pets!!!
December 8, 2017
Ticks are pervasive in our woods and we're very invested in protecting our active pets and ourselves. We've successfully used other extended release collars and some prescription brands in the past and decided to give these a shot on our two large dogs and our cat. It's been slightly over a month and I can confirm that they do indeed work quite well against ticks and fleas. However, our one dog started having worrisome and recent obvious unusual physical and mental behaviors: coordination, sight and lethargy issues, noticibly losing hair on her hind legs, as well as random large blisters. Our other dog and our cat do not appear to have any such problems. I'm hopeful that since the collar seems likely to be the culprit in her decline, and our subsequent removal of it, we'll see her return to her normal, spirited self. She had a physical, complete blood panel and dental cleaning a few months before we fitted her with this collar and she was pronounced very fit. I suspect that she's having a toxic reaction to something in this collar. I read the manufacters fine print before purchasing these, but failed to read the low rated reviews regarding reactions other people have experienced with their precious pets.