Regarding products, I couldn't say. I stopped using digestive
enzyme/bacteria products because the results of the digestion
(fermentation?) seemed to stink twice as much. The potty seems to wash
clean with a hose anyway, without the digesters.

Regarding odor minimization, I have found the single most important
trick is to convince all my potty users to never pee in the toilet.
Urine in the potty seems to degrade into a particularly foul brew.
(Ammonia?) On our large western rivers, the gov't-sanctioned protocol
is to urinate in the river anyway, so my request is in accord. HTH.

--Dave

Bill Tuthill wrote:

Maybe I should ask this on Boatertalk's rafting section,
but here goes.

Are any products useful to reduce portapotty odor?

I know of powdered Clorox (causes pressure build-up)
Blue Goo (never tried it, but some rafters swear by it)
and now Odorlos/Odørløs, a dry powder.