Valterra V22002 Pure Power Waste Digester and Odor Eliminator - 32 oz. Bottle

So far seems to work well... BUT, the container apparently had a slight leak, as the box it came in along with my car trunk smelled like a port-a-john. Not happy with that end of it. Dont deter my comment from buying it, all other product reviews on other sites indicate this is what you want to use. My electronic gauge now is working correctly, so this did what it was also supposed to do.

Found this on a fluke down in Baja. Its the best tank deodorizer Ive ever used.

Not as advertised

...and this is the best I have used to maintain our tanks. It works! It is easy to use. It is economical.

I have used this product in over 11 years of full time RVing. It was recommended by another full time RVer who at that time had been on the road for over nine years.

Just like I’ve been using for 6 years

This works the best. Eats up stuff so it flushes easily and the smell does not over power you.

It does the job. Been useing it for years

Worked great

This is THE BEST black tank treatment I have ever used. And trust me, I have been through them all. Every brand, all the DIY kind. This is the best stuff and you need so little to do a great job. I have literally ZERO odor. I will never buy anything else ever again.