FWIW, it has happened to me and it ticks me off but there's not much to be done about it. There are a lot worse things that can happen. Like when someone drives over your lawn. Anyway, here goes:
Start cheap. Slap a large No Dog $hit sticker on the can. You know the one I mean;big red slash through a squatting dog.
If that fails, go Old Testament on them. You probably have your suspicions as to who is the culprit. Leave them a blue-bag on their doorstep. A note indicating "Undeliverable: Return to Sender" is a nice touch.
If nothing works, get a camera and then see if they (or the police) give a crap if you have 'clear and undeniable video-evidence' of ... putting trash in a trash can.
I don't recommend the Old Testament route, especially if they
have video surveillance!
Edited by 123, 20 April 2012 - 05:31 PM.