Name: Rick Corey Everett WA 98204 (Zone 8a) Sunset Zone 5. Koppen Csb. Eco 2f
Great link, Lynne!
Re-phrasing, cat litter is only heated to ~500ºF, not the 1400ºF it takes to make the particles hard-when-wet. The author said that cat litter melts into something gooey when wet.