Sometimes the very reason they leave stuff around is so they can still be in your life. When I finally had enough and I was just done with him, I packed all his things, paid for one month storage to put it all in, and sent him a text message photo of where his things were letting him know there was an opening large enough where I put the key so he can grab it. And that he had a month to get it. He did end up picking it all up, but the nice part is that when I rented it I did it in his name, his phone, his address, etc. so if the month came and went then he would deal with it himself. It was totally out of my hands.