1/3 sand - 1/3 dirt or soil - 1/3 DE my bathtub is 2' deep 18" tall and 4' long
My old one was not deep enough and they kicked the sand out all day long. 2' X 3' but 10" deep
DE (Diatomaceous Earth) Food Grade - Food grade diatomaceous earth is EPA approved to be mixed with grains to...
I put it where the girls dust bath. It will help with mites and little critters. I spread it around liberally where they tend to hand out. Use Food Grade DE by the way
Steve