Even though I built the chickens a nice covered sand box it was too close to run wall and the rain penetrated the wood. I did have the box slightly elevated but the wood it's self got wet and the sand just sucked up the moisture. I have the sand in several containers in the basement trying to dry it out but it's been a week and it's a slow process. I was wondering what others who live in wet and cold climates use in the winter time and or where they found dry sand??