Hartz UltraGuard Flea and Tick Collar for Cats and Kittens, 7 Months Protection, 1 Collar

It doesn't work. I have 3 cats. All have had it on for weeks and they all have fleas very badly now. One so bad that shes licking and biting herself bald. Going to Tractor Supply to get a seresto collar.

Absolutely horrid. Bought a week ago for my semi outdoor cat(she stays inside, but loves to just lay in the backyard on nice days.) She had it on for around 3 days before I noticed patches of fur coming off around her neck. I took off the collar and she had juicy, nasty, welts all around where the collar touched. Took her to the vet and these collars are known for causing chemical burns. Do not buy!

I dont even want.to give this a star. My pet has never had fleas or ticks. We moved in the south out of the city and I tell you fleas ticks infested outside. So I bought this and my pet is not comforted. I'll try the pricey treatments hopfully they really work

The Hartz UltraGuard flea/tick collar seems to be working really well on Renee. It's pretty, purple and smells great! My only complaint is the buckle. It's square with sharp edges that only get sharper. An oval design would be oh so much better! Thus, the 4 star rating.

My cat had a severe allergic reaction to the collar. He has a horrible sore all the way around his neck that's bleeding. I'm taking him to the vet tomorrow. My other cat didn't have this problem though. I've bought this collar before and never had any issues.