I have been to the Liberty campground a few times over the years. Free? Check. Beautiful woodland area with tranquil babbling brook? Check. Unknowingly camping the same weekend as a massive buggy and atv meet up? Check. I'm sure you'll agree that the best time to go riding with your throttle wide open is 3am, hammered and bored of the fireside fist fights.
The campground is amazing, dont get me wrong, but it's also free. This is only my opinion, take from it what you will. I feel the lack of having to pay may also have an affect on campers' accountability. Is Liberty a great place to camp? Hands down, yes. Should you expect to have to police up items left behing by the most recent ne'er-do-wells on your arrival? I'd say it could be a possibility.
There is a main vault style toilet when you first drive into the area. In almost all of the campsites there, you will find a fire ring and a chained up heavy-duty picnic table.