That's interesting - I had a roommate in college who was trying to get his jeans to evolve. Basically, all his clothes went in a giant pile on the floor of the closet, apparently in hopes that they would evolve bacterial cultures that would eventually walk themselves to the laundry and jump in the wash on their own. He had a lot of clothes, and was able to keep this up for some time.
I finally persuaded him to wash them himself by pointing out that any culture that evolved to the point of being able to wash the jeans for him was unlikely to be self-destructive enough to actually go through with it...
Akin to leaving a hamburger in the back of the fridge for several months,
waiting for it to evolve into a t-bone steak...