I love sand for the coop and covered run. I use course sand that has small pebbles and is used under road pavement so it is course like river sand. Maybe it was this post I read 4 years ago and convinced me to use sand? It takes me just minutes to clean each morning with 2 kitty litter shovels and when the one gallon bucket is full into the compost pile for next years garden. Best article I have read for how to use it for chickens. Thank you ?