Very pleased with these collars even tho they are expensive and a certain website sells identical for £5. Even at full price it worked out cheaper than spot on type treatment which my cats hate. It last 6 months on them. I just replaced them today.

Waste of money. After 2 months both the dogs we brought these for( they live in separate addresses) had fleas. Spend your money else where.

Bought this collar with a big hope to get rid of fleas in one of my cats. Unfortunately it does not give any effect agains fleas at all! Also the cat started scratching around the collar area a lot. Waste of money!

My long haired cat, Charlie, always had a problem with ticks but this collar controls them extremely well. Unfortunately his brother, Harry, developed an allergic reaction to the collar and I had to remove it after a few days. I don't know what ingredient cause the reaction, he's never had a problem with flea treatments, so in his case a waste of money.

Five stars. Our cat had a bad attack of the fleas in the hot summer of 2013 and we were given this flea collar by our vet. It worked and has been working ever since. Never had a single flea issue since.

Absolute lifesaver! A mild wet winter here in France seemed to make the fleas totally resistant to everything we tried. All the different spot ons from the vets would work for a few days then we’d be back to itching cats. Our girl was totally plagued with an allergic reaction to them. I hadn’t tried Seresto because both hadn’t tolerated flea collars in the past and it seemed to be the same drug as one we had already tried, but on vet’s recommendation we thought anything was worth trying. Well, both tolerated us putting on the collars - both difficult to handle girl and scaredy-cat boy (they are rescues with history!), and they were comfortable within an hour or so and have been fine ever since. Now six weeks later, girl’s hair all grown back and she’s putting on condition again. And no ticks! Added bonus! Just wish there was something similar for horses! Do not hesitate, these collars are brilliant.