Washing hands and washing the eggs before use is all I would do.Question on the premethrian.. just cleaned coop all out and still saw some ants in nesting box. I sprinkled it all over the floor of coop and nesting boxes and put litter/straw on top of it. I know it’s toxic to inhale for humans, do I need to be cautious about handling eggs from nesting box or anything or as it sits does it get less toxic?