I want to switch my lizards from aspen pellets over to a "sand soil mix" type substrate. I know it is cheaper to make my own but don't know where to get topsoil and playsand. We do not have huge stores like home depot or wallmart here, and while at the gardening supplies shop, I saw the soils labels were all in german, and I don't know which has fertilizers or not. The bags are also HUGE. The only one which I could read has no fertilizers or chemicals was not top soil, but peat moss (is that ok to use?)

Then at the reptile shop I see Komodo Tortoise Eco Terrain, which says it is a sand soil mix. Has anyone used this and is it safe?