I finally was able to track down some unglazed quarry tiles. I had to special order them as no Home Depot or Lowe's in my area carried them. I'm pretty psyched to try them but want to know how to clean them before use. Do I wipe them with a damp cloth or do I run them under hot water with no soap? I'm assuming soap would be a bad idea but am unsure. Also, will getting them wet possibly lead to them cracking? I purchased them because I was sick of my regular pizza stones cracking. I usually crank my oven at 550 degrees for about an hour before making my pies. I'll try to do the same with these. My pies usually cook in about 7 minutes or so. Any advice would be greatly appreciated! Thanks!