[kjc]

I use Revolution on my dogs and cats... for heatworm prevention and flea control. I like it because it is only one chemical, not two products or a combination. I also use it on my Liver Shunt dog... she's never had a problem with it. I measure the doses out according to their weights (my vet did the math, lol) and apply topically monthly, and every 6 weeks for my LS dog. Also it can be washed off after only 2 hours.

PS: To anyone using two products... it's safer to apply them on different days, preferably two weeks apart.