I only used the Comfortis once and it worked great. Cut the fleas down considerably. We used it as instructed with no problems or side effects.
Just when I though we were through with this crap . . Here it is mid winter freezing temp and I am still finding the occasional flea. It looks like its time for another flea bath and a thorough cleaning of the carpets !! Believe me I will not be so lax this spring and let these stupid fleas invade my pups and my home. Its very frustrating and we were miserable.
