Hi! We just joined this wonderful forum. On March 9th, my mom and I got our first babies. Thanks to all of you and the excellent information on this site, everything has been going really well for us. One question though, I would like to give them a bit of sand, for grit and entertainment (bathing, scratching, etc.) and have read several posts about it needing to be clean. I found "washed sand" by Whitney Farms for horticultural uses, but it does not list the ingredients. Someone mentioned on here about making sure it did not contain asbestiform tremolite or crystalline silica, as play sand might. I called the company and they assured it would not harm chickens, but could not tell me what was in it. What are your opinions?