Groupon Deal: Colon Clease (+question)

This is today's deal
Groupon Colon Hydrotherapy



Now My question... Have you ever done it? If so how was it?
I am still unsure about this, bc I am scared!!!!!!!! Fh and I always wanted to do a Colon Cleanse though....
Any thouhts/ideas regarding this Colon Hydrotherapy???

Gracias