Do you think if I post signs around the house...?

I feel for you! i live with 2 men and it seems i am picking up after them constantly. i posted a chore list on the bar fridge (which i also empited and his the booze in it) and for every chore done on the list they would get a beer back in the fridge. you should talk to him and tell him that you are getting worried that you might trip and fall and hurt yourself if he leaves his stuff around the house.