Mobile Toilet

A portable toilet flushes and carries waste away like a conventional toilet but the waste is not transported to a sewer, instead is carried to a holding tank underneath. ... Inside the holding tank are chemicals that break down solid waste, kills germs, destroys smells and reduces toilet paper.

To completely empty the waste reservoir, add a bit of fresh water to the holding tank, replace the spout cap, agitate the tank again, and empty it again: this will remove the last bits of toilet paper that may otherwise remain.

It should either be thoroughly buried in a cat hole or placed in plastic bags and packed out. Natural toilet paper has been used by many campers for years. When done correctly, this method is as sanitary as regular toilet paper, but without the impact problems.