I have a mult-cat household and I have to say that this is the best topical flea treatment that I've tried. I've tried using the more affordable over the counter brands you see at the grocery stores and such, and they really do not work. Not only does this kill 98 to 100 % of the fleas in the first twelve hours, each dose prevents reinfestation on your cat for 1 month. This together with treating your home and pet's bedding with safe flea treatments, you can break the cycle and rid your home of these parasites.
A helpful tip for all of you as well, you can save quite a bit if you shop where I do to buy Advantage, which is Banfield Vet's offices inside your local Petsmart. Something I found out about them is you can walk in and purchase fleas treatments regardless if you are a client of theirs, and they will price match. That is how I saved 20 dollars off the regular price! I went online and found a place that sold their Advantage at a cheap price and printed that off and took it in, and they matched it! The reason why you want to do this is because you can always lock in that same savings by taking that first Banfield purchase reciept back, and so on and so on. I do and it chops the price nearly in half every time. Also, you can get a free 1 month dose with your purchase by following the link and printing the coupon. I also added a link to my reciept so you can see it better and you all can see the savings I got.