I am not sure if anyone else does this, but my friend and I (who also does cat rescue) just started using Stall Dry as our cat litter. We have been adding Stall Dry to our cat boxes for quite awhile now to remove the odor and extend the life of the litter, but we recently decided to cut out a step and just use Stall Dry. After a week, I am very happy to say that it is wonderful! There is absolutely no odor whatsoever and the upkeep is very minimal, even less than scoop-able cat litter with none of the smell and the tracking is just about the same. We just scoop and stir every other day. We have read on other sites that the Stall Dry will last up to one month used as cat litter. If that is so, I've just cut my cat litter expense in half because 40lbs of Stall Dry at $12.99 a bag goes a really long way. Just thought I'd share this with anyone else who hates litterbox smell and is looking for ways to get rid of it and make life easier!