Zoo Med Excavator Clay Burrowing Substrate?

[LizMarie]

I heard about this in another post and decided to check it out. It seems cool but is it safe and how does it work!?

http://www.reptilesupply.com/product.php?products_id=1810

I just find it interesting..

 

[voretaq7]

I've been thinking about it myself to fill in the seams between my tile and the edge of the tank (I've currently got it packed with sand because escapee mealworms were living under the towels, but I'm not crazy about sand in the tank even if it's only an inch all around the edge...).

From what I've read about the Excavator Clay it hardens like packed clay or grout, but if your leo walks across it with a wet belly the color leaches out.