My hubby and I are a CDD couple. He does fleet enemas a lot(they suck,) but all of the directions are on the box. I have a bad habit of not drinking water during the Summer, so he is wanting to do rectal rehydration as a punishment, and he is looking at using a colon tube to administer it. He is wanting to know the most accurate way to insert it while still getting it as deep as he possibly can. He is also wanting to know the best solution for rectal rehydration. We have heard of pedialyte, liquid IV, and straight water.