OdorKlenzPet Litter Additive Odor Neutralizer - Powder, 14.8 oz.

Seems to work at least pArtially. I use Worlds greatest cat litter, fragrance free, and i what Zi smell sawdustA couple of months later really not worth the cost. Baking soda better. Will not buy again

This stuff is great. A bit pricey but if you haven't tried it, I suggest you give it a shot.

It works well.