Citricidal...grapefruit seed extract...about 20 drops in a sink of water...soak for a bit and then rinse.
*BTW...when I've done colonics on folks who were using creatine...they didn't release very well and appeared quite dehydrated. My understanding is that large doses of creatine causes the muscles to retain water making them appear more 'pumped up'. All I can say for sure is that it doesn't do any favors for colon functioning!