Dear God.....don't do it....only have heard horror stories....can't do anything for a full day after an enama is taken......drink water and you're in the bathroom 5 minutes later......
I was kind of intrigued by this. From what I've found the best way is an oxygen based cleaner. Oxypowder and Homozon seem to have the best reviews. http://oxypowder.com/ I couldn't find the actual homozon webpage, only resellers. Seems to be a weeklong event for the oxypowder.