since living on a farm for the past few years i have changed from my city ways to farmer.....(don't shoot me) but i do not rush out to by all though high price stuff for fleas......last time we had fleas in the house (about 4 years ago) we took a large box of salt and speed it ourn the house...waited a hour and vaccumed it up...worked like a charm....we also sprayed out dogs down with tea tree oil mixed with water...flea,lices and ticks do not like the smell of tea tree oil....we also use that in out chicken coop.