I used to live in an apartment complex that had 3 washers and 3 dryers for 24 units. The washers and dryers were always busy, mostly on the weekends. If someone left a load in the washer and it was done, I'd take the clothes out and do my laundry. The way I figured it, if they can't be considerate enough to removed their stuff when it's done, the hell with 'em!

As far as washing with turpentine in a public washer, I'd report it to the management.

Good luck!