4 Pack Flea Collar for Cats, Cat Flea and Tick Treatment, 8 Months Protection Flea and Tick Prevention for Cats, Waterproof Cat Flea Collar, Adjustable Cat Flea and Tick Collar for Cats Kittens, BlackCarbonfree Certified

I wanted to wait to write a review until we went through two uses of this collar. First let me start by saying how much I love these collars. I’ve tried every collar out there and this one has been the most effective out of all of them. It started working instantly. Fleas were gone within the first week. They fit really well and were easy to adjust. The price alone was a pro in purchasing them. My cats have had no skin irritation at all and act as if they’re not even there. I love how long they last as well and will definitely be purchasing them again!

I have a multi-cat household (6). All are completely indoor cats, never been outdoors. But we live in a rural area and we were still having an ongoing issue with fleas. I tried everything. Sprays, topical, oral meds, separately and combined. Nothing has ever worked as well as these collars. They're pretty for flea collars and they snell wonderful! My cats love wearing them (and they usually hate collars). Within an hour, no more flea issues. It was a miracle. I'll update later and let you know how long they truly last but I would gladly buy these every month if needed.

Doesn't seem to bother my cat and it does work.

Great product, worked well and lasted! Highly recommend!

Why did you pick this product vs others?:Contains detramelthin, toxic to cats. I only had it on my babies for a couple of hours and they were lethargic, staring off, acting very strange. Wasnt until I read the 1 star reviews that I saw how bad and harmful this product is for cats, please do the same and DO NOT BUY FOR YOUR CATS

Seem to be working great on my cats and great price

These collars really work. I was worried that they wouldn't. And they are cheap. I change mine every six months. No fleas

I got these for my mom’s cat who she cannot put flea drops on.When she first opened the box, she notified me of a very strong chemical smell and stated that her fingers were tingling when the out the collar on and then off the cat.The active ingredient seems to be deltamethrin, a pesticide used to combat ticks and mosquitoes - in addition to fleas, I guess. If you google the chemical, the tingling on the skin and the chemical smell are known issues with the stuff. That doesn’t mean that the collars are not safe, as with most chemicals, your mileage may vary.By the time my mom brought the opened collar over to me, there was no harsh chemical smell, just a light artificial floral smell. It reminded me of the smell of Play-doh. I guess let it sit for. But after opening the individual collar’s bag and have it off-gas.As to their effectiveness, we’ll see about that. The active ingredient is not the same as in Seresto, it one Seresto collar costs about twice as four pack of these collars.