Is it ok to reduce the amount of Frontline Top Spot on your dog, if the dog reacted to it before? I used 1 vile per dog before and it said up to 22 pounds, safe for puppies also. My Dogs went kind of crazy and I had to bathe them right away. This time I took 2 viles for up to 22 pounds each or 44 pounds and divided them up between all my dogs (80 pounds total). I used the drops per pound of weight. Is this ok? They seem to be biting at the fleas already so it must be working.