Really need advice!

This sounds stupid coming from a m with kids but dunno what to do so I need advice on this.

My stepson (12yrs old) has been staying here for one night a week over the course of 4 years, he has this disgusting habit of picking his nose and rubbing it on the walls EVERWHERE, his room, bathroom, hall, living room you name it. I've had my SO pull him up about it repeatedly but still he's doing it! This is 4 years of snot!

I can handle vomit, poo, pee, spit but I cannot stomach snot! And being pregnant it's actually making me throw up!

How they hell can I make him stop its just plan disgusting and it's smurfing my painted walls!!!

Have you tried making him clean it off the walls. If he has to start cleaning the snot off of everything he might think twice about it. He's definitely old enough to know better

I'd give him a bucket of water and a rag and make him clean your walls every day until it stops.

12?! Make him wash all the walls! I'm completly serious. That is nasty. I am so sorry you're dealing with that. I can't handly puke. ughhhh

I agree with the other two mamas, make him clean it off, 12 is old enough to know that is not acceptable. I would also give him some of those travel size tissue packs and make him carry them in his pockets.

OH ALSO....... ask his mom. Does he do this at her house? What does she do to prevent it or as punishment there?