<human>: About a year ago one of my son's friends from next door wiped feces on the wall in my bathroom.  It wasn't necessarily grotesque - more like he got it on his fingers while wiping and decided to wipe it on the wall to get it off.  There were other kids over at the time, so despite the fact that I knew who did it, I just got the kids together, and told them that if it happened again, they wouldn't be allowed to come over to my house.  I don't have a lot of rules, but I'm very strict about following the rules that I do have, so I usually don't have behavior problems with any kids.

So it recently happened again - this time it's a one finger smear wiped on the floor near the toliet - again like he just got crap on his finger and wiped it on the floor instead of wiping it on toliet paper.  I didn't notice it until after he was gone.  The irony is that he came over to use my bathroom because there's was going through a remodel.

For a little background, their house is both messy and unclean, despite the fact that the mom has a very well paying job and is really intelligent.  Whenever my son comes home from their house I make him wash his hands and it's all I can do not to make him change his clothes... but I'm trying not to be ridiculous about it.

Do I tell his mom, knowing that she's going to pitch a fit at him, and the kid gets embarrassed?  Should I confront him about it directly, tell him he's not allowed to come over for X time?  I mean right now I dont even want the kid sitting on my couch.... that's harder to clean than the toliet.  Further complicating this is that I have a pool, and lots of the neighborhood kids use it.  I realize kids usually pee in pools, but if you're willing to wipe shit on my floor, at least I can see the evidence of that.

Give me a shortened version of the text
<bot>: kid wiped poop on my floor after I've already talked to him about it.  Do I just ban him from my house, talk to him, or tell his mom?