Typically, I would use the restroom before having anal sex. Also, we would make sure there was a towel underneath us, just in case. His dick never really came out with anything on it, when he used lube. We would take a quick shower afterwards, and everything would be right as rain.
I never had an enema or anything. :shrug: Also, yeah, don't ever have vaginal sex after anal sex- that would result in yeast infections.