This is the best brand in the market.
It starts working quickly. I like the convinience and the service of BestVet.
I did not know about Credelio for cats. The topicals stopped working in my area, I guess the fleas adapted. I have been using Comfortis with complete satisfaction, but the pills are very big and smell awful, not even the dog would eat it. This pill is smaller and flavored. I have not used the product yet, I will edit my review when I do. Best Vet had the lowest price I found, and very easy ordering.
Cats are not crazy about eating, but we manage
Credelio is the best flea brand.