Review on 😺 Hartz UltraGuard Purple Flea & Tick Collar: 7-Month Protection for Cats and Kittens by Dusty Oner

Just didn't kill my cat's fleas. I don't know how well this will work against mites as my cats don't get many mites. I checked regularly over the course of a month and each time I still noticed a few fleas on my cat's stomach and near his tail. It may kill some fleas and/or it may kill fleas that come in closer contact with the collar, but it does not kill ALL the fleas. I followed all the instructions and stretched the collar before putting it on my cat. I made it fit snugly around his neck to make contact with his skin (but not too tight). Fortunately, no irritation caused. The tear off feature seems to be working. It also has a nice "fresh" scent if that's your thing. Unfortunately I don't think the active ingredient (Tetrachlorvinphos 14.55%) kills fleas (at least not in this region of the country). I will not buy this collar again. Topical flea treatments (like Advantage II) seem to work better on my cats. It kills adult fleas within 12 hours and prevents reinfestation by also killing flea larvae and eggs. Unfortunately, it doesn't kill ticks.