I dump the bags in the first trash can I see. I only use TRASH cans, and make sure recycling cans aren't used. I also will not put it in empty cans because I don't know what the cans purpose might be (is it for grass only? Recycling?)

Nobody has ever said anything to me, and if they did, my prepared reply is, "would you rather I left it on your grass?"

I leave my trash cans out so people can throw their trash in it. I get a LOT of McDonalds cups and wrappers in my yard. It does my heart good to see people use the can instead of the yard.