I tried dumping mine and the Sanidump once and it was terrible. It was concrete with this little 3" hole with a metal flap flush with the ground. I had to step on the flap with one foot and try to aim the porti-potti spout in the hole before it started spilling out. Disastrous. Since then I've used campground outhouses. Much easier because of the height. I wouldn't use a flush toilet though as it would fill up quickly. I wouldn't want to see someone using the bathroom since to fill and rinse their potty.