Looking for a Porta Potty recommendation

I bought a port-a-potty from Amazon. My TC also has only a closet for a bathroom. The one I got works great for waste. It has an upper part for holding water that flushes and the bottom part for holding the waste. I tested it out and left it dirty for about three months with some of the orange tank stuff in it and it worked great. No smells at all. If you look on Amazon just pay attention to the reviews, I know they had a shorter one and a taller one of the same model, one holds more water than the other.

Let me know if you would like to know the model and I can look it up for you.

Josh