The responses I have so far received are just great because I want to welcome input on this Advantage since I am so new to it and I informed only to what would not endanger, as I believe. My beloved bunnies are indoor rabbits and live extraordinarily well because I love them so dearly and, so saying, I knew the risks but I also opted for the very best remedy for fleas. I take my bunnies to a rabbit-savvy vet who recommended the Advantage but does not stock it as the norm!! So I thought that was odd until they explained the bulk rate they are REQUIRED to buy at a time at about $600 per box!! Well, the scrip ended up being re-routed through a vet's office that does stock this product. Anyway, rabbits are exotic [and I know you know this] which makes it different than keeping the more domestic dogs/cats, etc. so I really have to go with what's workable and my rabbits have responded incredibly well to Advantage. The dosage just needs to be very, very minimal and I should correct one mistake I realize I made in my first post. The dose for rabbits is half the dose for kittens. I wholeheartedly apologize for that!