Agree with Daddysapig about being different for all, but I will share what I do. I’m a total slut cum dump that refuses no cock, so u know where I’m coming from and I’ll be direct here. Also about the guys that want u so spotlessly clean...yes, you can be very clean, but let’s remember we’re fucking in our asses so once in a while they may get some shit on them and it’s not the end of the world, so don’t let them make u feel bad!
First I usually always have a high fiber diet that helps. If I’m going out to just get bred by one or two guys, I just douche with a large douche bottle u can get at a sex store or just get an enema bottle from the drugstore and use it, clean it and store it at home. Also the hand shower nosel can work as well. Just douche a few times until the water that comes out of you is clear. You will be good to go for 2 to 4 hours...don’t eat anything after you douche.
if I’m preparing for a gang Bang breeding session, I start the day before. By noon the day before I stop eating solid food and I do several glasses of metucill. Soups and diet shakes, etc. then I follow the above with deep enemas...I fill my bowels with water until clean. I wait an hour then repeat. If I do this I find I usually good for 6 to 8 hours of guys breeding me with zero mess!!
good luck!