I read about whitewashing my coop and followed the instructions that said use hydrated lime and water then paint it on. It seems powdery even though it's dried overnight. Now I am reading that I should have got ag lime instead. Am I going to hurt my chickens??? What should I do? As long as it's painted on will it be ok? I understand not to sprinkle the powder down on the ground. Should I rinse it off? Will it rinse off? I am getting them in a few days.... Please advise. Thank you.