I have a 1/3 tank off poo and pee sitting in my driveway right now. Spent the weekend at the wifes BIL's. No where to dump on the way home and didn't want to do the cousin Eddy thing in the street:). We are leaving again this weekend and will be staying in an RV park for the 1st couple nights. I'll dump there. I don't mind leaving a partial tank of stuff in the black tank for a week or so if I know I'm definitely heading out again. If it's at the end of a trip and I have no set plans in the coming weeks, I'll find a dump station somewhere. I don't mind paying either. Just part of the fun.