So I've just gotten a hand me down portapotty that's only been used a couple of times. One of the cartridge style ones (two seperate containers, pull a lever to open the flush hole).
I've already done some reading the home brand napisan seems to be the go, dish washing liquid and water in the top tank, so think I'm all set there.
There seems to be a tiny pin hole in the top flush tank, I believe its for air to come in when I flush so I don't end up with a vacuum lock.
Do you travel with water in this tank (save me using 10L of fresh stuff to fill it whilst on the road)? If so, just a bit of tape over the hole? I don't exactly want stuff splashing out, but surely I can't be the only one with said pinhole setup?