I introduced my chicks 2-3 weeks old, to dirt/sand(from my yard, mostly sand) for them to use. They love it! I only leave it with for about 3 hours and then I take it away from them. Question’s: First: Can I just leave it all day with them? Second: Can I reuse the dirt/sand after I clean the poop and wood chips out? Third: This might sound odd, but it was wet when I needed the dirt, so I baked my dirt/sand to dry it out. Is baking it harmful in anyway or is it safe to do? Also I was thinking, if I baked the dirt/sand that it would kill anything that was in the dirt/sand?? And then I was thinking would baking it also kill coccidia, if it was in the dirt/sand? Also they are on medication feed to protect them from coccidia.