Hmmm pasta, I'm suspicious as it was previously available on prescription and now it isn't. Frontline was available on prescription and then it wasn't plus the price dropped and we know why. So I'm a wee bit suspicious. I've read the reviews, mainly good, some bad, but mostly from America where it may not be the same strength. Personally I wouldn't risk it as I wouldn't want a home or animal infested with fleas. My feeling is that it's not much good if it doesn't need a prescription but I'll probably be eaten alive now for that remark. Why risk it though? X