is it possible for cats to have fleas but not in the house? I have searched everywhere and been on the floors for long periods of time.. no fleas on me or my boyfriend, no bites only when the cats sleep with me. I take them off my cats and flush them down the toilet and then they seem to have more not long after that... any idea whats going on here? We did use frontline and plan to get more int he next couple days... or maybe revolution as i hear it works more. I just dont know what to do.