Aspen is soft, dust-free, odourless and highly absorbent, and is ideal for species off snakes and mammals that like to burrow or nest. Aspen is used by professional snake breeders worldwide. ProRep Aspen Bedding should be used dry. It is highly absorbent and will quickly absorb water spillages or animal waste making spot cleaning quick and easy. DIRECTIONS: Spread the substrate evenly over the bottom of the enclosure to a depth of at least 1-2″ (2.5-5cm). Spot-clean daily and completely replace every two or three weeks or more frequently if heavily soiled or wet. If you are using an under-tank heat mat as your heat source do not use a thick layer of Aspen as this may cause the heat mat to overheat. Please refer to the heat mat manufacturers instructions for more information.