Has or uses "Happy Camper" Holding Tank Products

I know I've seen it in a couple of stores, but I get it on Amazon. It does work for us.

We did an experiment where we didn't use it once - just water.

At least we discovered that the vacuum break for the black tank rinse was bad, from the smell.

When we use it, there is no odor, even when running the bathroom vent fan while flushing.

It does work.