I took an enema once that I in't want to repeat at the time, but now, maybe under the right circumstances
Be careful! You want to do this n an empty stomach ONLY!
If you want a SINGLE enema that can really clean you out with one round This will work but use it SPARINGLY No more than a couple of time a year and make sure you are an experienced enema taker, and are ready to be surprised.
Start the afternoon before ideally right after lunch. eat LESS for lunch than usual
After lunch drink a 32 bottle of either Powerade or Gatorade.
Rinse the bottle repeatedly till you can no longer smell the original contents.
Then put in 18 oz of glycerin After that's in pour in the contents of ONE Fleet enema or equivalent generic. Fill the Fleet bottle again with 4.5 oz of potable water.
Put the cap back on and shake it up good!
Then let it set overnight
The next morning without eating anything in between, while you are prepping the bed or table for a Simms position enema place the bottle in a hot water bath in a sink or dishpan.
Once you are set up, pour the contents of that Powerade bottle into an open-top bag type syringe. Hang it about 3-ft above where your rectum will be when you are in position.
Get in the Simms position, and with the nozzle you are most familiar and comfortable with, take the enema as you would normally take a 2-qt enema. Be ready it goes fast
You should have 2 washcloths ready One as a bite/twist rag the other clean to stuffing in your rectum if you start to leak on the way to the toilet.
I pride myself on retaining 3-qt Epsom salt and soapsuds enemas 15 minutes
I have done this sort of enema 2 or 3 times in my whole life, I have yet to get past 11 minutes!!
You won't need a second enema that gets EVERYTHING out!
Keep a dishpan or empty trashcan within easy reach of the toilet in case it DOES come out both ends at once!! If you fast at least 12 hours ideally more before stating there is a good chance it won't do that, but it WILL feel like it's going to If there IS anything in your stomach, it's almost certainly coming out, so be ready
Don't do anything physically strenuous for at least a couple of hours after.