Garbage in Springfield
Some people use them as part of their decorations, I for one don't & cleared it all away & got my donuts! Its all personal preference :)
Forum Discussion
I used this sites "Search" (which sucks and blows by the way) and found this old thread discussing donut drop rate from cleaning the garbage.
http://forum.ea.com/eaforum/posts/list/25/9037459.page#26811677
http://forum.ea.com/eaforum/posts/list/25/9037459.page#26811677
