I use it in my coop and horse stalls to keep the smell down. I've had virtually NO smell in my chicken coop with my hens last year... and very little in my horse stalls.
Yes, I use food grade, I was able to find some locally, I only have to drive 20 minutes to get the 50 lb bags (Perma Guard). I found them by doing a search online for food grade DE, found this brand, then did a search for local dealers in my area. I've read of people here having it shipped to them...but I'll bet that's quite spendy.
Thanks for the answers, I have not used any with my chicks yet, as I wasn't sure when I could start using it with them. I will be cleaning the shavings in the brooder this weekend, so I'll add the DE this time around! Thank you!
Angie