Food Grade ONLY the other is deadly to animals its a poison. I have to say its for pest control, worms, helps with digestion, keeps water cleaner, and the list goes on. We even put in the feed to keep any form of weavels or other bugs getting in there plus the chickens get the benefit of help with digestion from it...and I wonder if it helps with egg shell strength but not found proof just my thoughts. I put it in my dogs food as well for some of the same reason plus when in blood stream after last year the fleas left and never returned
which made us all happy. As far as to control oder I don't think so and haven't seen it work for that personally. I put it in bedding as well. I put just a dash in the water when I fill the large water up and it helps keep the algae down in them...My son does this for his horse as well keeps him from scrubbing tanks every day or 2.
But I suggest go to ebay and get food grade....but a little goes a long way. As much I use it I got 50 lbs. and still have 2/3rds of it at least.

But I suggest go to ebay and get food grade....but a little goes a long way. As much I use it I got 50 lbs. and still have 2/3rds of it at least.