I've actually been using cat litter instead of sand in my lofts for quite some time now. During most of the year, I tend to use Easy Bed or wood chip, but I noticed that they can get a bit smelly and damp during the winter if left for too long. That's when I switch to cat litter, and let me tell you, it works wonders! It does a great job of drying out the droppings and keeping the loft fresh. Give it a shot, and you might just be pleasantly surprised by the results!