I only weekend camp at local campgrounds in my area. There was a time, back in the day, that everybody had a trash can at their site. Those days are over. Most places I go do have a dumpster. There are no bears in my area so I just use a small kitchen garbage can outside my TT and take the garbage to the dumpster at the end of the weekend.
It seems to me that many of you should be thinking about where all that garbage comes from !! Why are you getting that much garbage to begin with? With a few simple changes you can eliminate a lot of that garbage.
Better for you, better for the park, and better for the environment.