ours is a spa bath. I just use viniger and washing detergent for the bath and clean as a normal bath and do it probably once a week or so. But for the jets I do put bleech in (fill it with water, put a cap full in and turn it on) (i only do this like once a month if that. since having Spock we havent used the jets in months). I read somewhere that spa jets are the one thing you need to be really hardcore take no prisoners on...