But as a rehabber, I have treated a number of impactions, and I too worry about impaction. Sand is just not as easily passed in some lizards. It can also build up in the intestinal track and prevent the absorption of nutrients over time. I do have half sand vivs for my breeders because the girls need it, and I know that people claim to have no problems with sand as a substrate, but I use either tile or paper towels. I might try your idea, Maureen.

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