I read several postings here regarding using construction sand on the floor. I couldnt find that post again but thought it said it dried out quick? Any who, I bought a load of clean river sand and put it in the coop about 3 inches deep along with DE, i have a raised coop and linoleum flooring with 23 hens and 2 roosters. Everytime i go down and rake it and scoop it, just like a litter box, the hen house is filled with a strong amonia oder, STRONG. It takes a couple of days to settle down. Now that winter has settled in, i cant just open the doors and let it air out. Why do i have such a strong amonia odor and how can i keep that from happening? I rake and scoop every other week but have not done it in 4 weeks because of the cold. Any ideas? Or solutions?