For a through cleanout without extreme discomfort try this, day 1 being the day before the cleanout:
1) Day 1, no solid food after breakfast and a full dose of a Miralax type product early in the AM, (say 6:00AM), Noon, 4:00PM and 8:00PM. Only clear liquids after a liquid lunch. In the evening take 6 Dulcolax Tabs before bedtime. Be aware that this will produce a very forceful movement in the morning.
2) Day 2, only clear liquids until the cleanout is finished. Expect a forceful movement in the AM from the Dulcolax tabs the night before. Continue the Miralax until you take the final oral laxative.
Now you can choose the rest of your program:
a.) Upon awakening 2-3 oz of Castor oil. (Allow yourself to mix this with an equal volume of chocolate milk or OJ and follow up with enough chocolate milk or OJ to get over the flavor and texture of the oil.) Four to 6 hours after the Castor oil very soft movements should be happening.
Four hours after the Castor Oil take one ten ounce bottle of citrate of magnesia and 2 Dulcolax tablets. Within an hour you can expect to be having clear liquid movements and your cleanout is complete. You should not need any enemas but once the citrate is out you can try a saline enema to prove that you are clean.
b.) If you just cannot do the Castor Oil take a ten ounce bottle of citrate of magnesia upon awakening. (This comes in original or lemon or grape flavor but none are very pleasant. Always take the citrate of magnesia cold and take the whole bottle in a single dose.) Follow up with another bottle of Citrate of Magnesia with 2 Dulcolax tablets when the first bottle starts working.
You should be having clear liquid movements by noon and be done by 4PM.