Hm, 19 months is pretty young to really learn he needs to clean up. I mean, you are doing the right thing when you're modeling it and asking for his help, but I don't think he's going to *learn it* today. I think you did what you could. If he's just continuing to sabotage your cleaning efforts, I would either clean it so fast that he can't stop me, or move him out of the way so I could finish.