"my california king desert snake loves this stuff. first off this is like the only sand product out there that is desinged to be fully digestable and bennifal to the animal when its eaten, (t-rex calci sand) not there regualr sand) since it has the calcuim in it there is no need to add vitumen supplements. also this sand helps promote the natural digging and burroing of animals. now my snake is a desert snake. its great, it holds the heat on top of the sand, but when my snake wants to cool off he can jsut dig undearneath it and cool off were its nice and cool if he wants. also this sand is wounderfull for spot cleaning, it clumbs well and holds together too, there is no dust with this sand, a big pluse for repitals or small pets since there prone to respitory infections. i have my snake in a 20gl long tank and put in 15lbs of this sand hes alittle over 2 feet and i will not have to add any more sand to his tank for 3-4 months, will be diffrent for each pet . this sand makes tank cleaning a breeze. along with keeping ur pet in its natural habbitate. id recomend this to any one who wants to give there pet the very very best, watch out for other sands they say its degestiable but not in recommend to be eaten, can cause potential problems. were this stuff ur pet can moaw down on it if it lieks and its only going to bennefit him. best thing ever for sand liveing animals. i gove this a 10 out of 10"