It is a nitrogen and moisture source, nothing more. Depending on the size of your compost pile would determine the potential impact. Two people peeing on a small pile might make some difference, but if it were a {{gwi:285344}}, (often quite a bit bigger than this) it would probably be negligible. However, it is in an out of the way place and pretty convenient place to "go" without being seen, when I am working in the garden without having to go all the way into the house to the bath room. Our dogs are pretty observant and try to mimic their Massa, are polite enough to wait till I am done then take their turn. Lady finds some leaves around the edge to squat over.

If you decide to chose to do so, have fun! ":^)
Bill P.

"Is there a good reason to do this?"

As Bill stated- moisture and N. In addition- you reduce sewage waste, water use, etc. There's an ecological reason to not use a toilet when possible.

You married a guy that doesn't want to pee outside? I use any excuse.

Our house has only one bathroom. I have a teenaged daughter at home. I keep a plastic milk jug in the privacy of our attached garage. I like the idea of re-cycling almost everything, and it warms the pile up a little.