ferret proofing is a HUGE deal. you have to make sure they can't get into furniture, under/behind refridgerators and the like. when my ex and i bought a new wicker sofa/loveseat combo i had to make a frame to set underneath as to prevent them from climbing up into to arms of the set. yeah, they'll come out eventually but it was never when it was time to go to bed. samantha (the one that looks like blankie) would finally come out and wake me up in the middle of the night by attacking my toes!