I used Frontline for years until last summer when it didnt seem to help. The vet recommended Advantage. I tried it & it worked, so I have a stash for this season now.

Pros: saw dead fleas quickly

Cons: it is a chemical after all

We have used this for years and have found it has no side effects as some say cats have. She is flea free which keeps the house and use free.

Easy to use and efficient as well.

Pros: It works to keep our cat flea free!

Cons: none

Killed fleas in less than a day. Wow does this stuff work. But long after first use, cat developed severe asthma. Could be coincidence. I'll never know...

Pros: Works very well.

Cons: I wonder about safety

It works and it's easy to use. I've used it on many cats. I've also used it on kittens that have come in with fleas and they haven't reacted to it badly.

Pros: it works, easy to use

Cons: none

Even with needing to get it at the vet, it's worth it as preventative flea treatment is necessary as she has a flea allergy. I like that it doesn't irritate her skin and plan on continuing to use this product.

Pros: Doesn't irritate her skin

Cons: Need to get it at the vet