Not really, I use tile. That way I don't have to worry. I don't like to promote the use of a loose substrate but I know a lot of people who do use fine sifted play sand without any problems. I think alot of it all comes down to how well they are fed and you husbandry has to be spot on. Plus it doesn't have calcium in the substrate. I have also heard of people using a playsand/soil mix. Its all up to you really. I personally don't want to risk it, I don't want to monitor mine 24/7 to make sure they aren't eating sand, and trust me I would be glued to their cages lol.