I worked at a private RV Park for a couple of Season's. Yes there were many Slobs , just chalked it up as Job Security for Me!
We always cleaned and raked the sites as soon as they were Vacant.
The Moto was " Here's Your Hat ...What's Your Hurry"
It always amazed Me at how resourceful some Campers were at rearranging things to suit themselves!
Often the Picnic Tables got shifted from one side to the other,and would You believe that they even moved the Fire Pit several Feet from where They were dug into the ground.
All in a days work !
Having Garbage Cans at each and every site helped some with garbage ,however there were times when it seemed like even those were not big enough for a few folks. I think that they must have brought their garbage from Home.