@Stacey46 I am a drive-to location, and many guests will leave behind food, personal hygiene items, alcohol and other things, large and small. I have had guests for 2days who fill the garbage cans to bursting while others are here for two weeks and have a single large bag of trash.
Yes, you will have to cover the cost of the trip to the dumping station. Add a few dollars to your nightly rate to reimburse yourself for the guest who fills the bin, especially if you find that you have to make the trip more and more often. It is not worth asking the past guest for compensation.