hi! to the question about bio spot [poo] it did not do a thing for us and wound up spending boo cuu $ to have my house sprayd,3times pet shampoos srays , not to mintion those lovely pin worms the kids got from the flea infestation a few years back, we had to de worm the whole family as the doct said ,and re do 2weeks later! well cost us with insurance$150.00 about for the pills,wound up shaving perssian cat ,washing about 6 animals a day :ee , no way agian we use frunt line on some and advantage on the more difficult ones ,and ones inside ,it will kill were your animals go also,i got ours online also a lot cheeper being how it takes quite a bit with my zoo! but it works for a mo! does not wash off ,is the only kind i can use on my borzois[ russian wolf hound]as they are very sensitive to others [lost one 3yrs back with adams flea spray, if it works leave alone! advantage, or frontline -life savers!