Gray tank capacity

It can be frowned upon, but depending on where you are camping, you can let the grey tank run out on the grass. It's just shower water and some tooth paste. I have never done this in a recognized campground, but have done it boon docking and have done it at home when I had 3 adults staying in our trailer for 5 days. It smells a little, but doesn't hurt the ground. But, don't do that in a campground. Most have a note about not letting grey water out on the ground, but not all. I think a camp host would freak out...