Hello! Chicks are 2-1/2 weeks old right now. They have been in the brooder in our basement since day one. I'm not ready to let them see sunlight for play time yet Couple questions though: 1. Should a dust bath be provided in the brooder for them? They are on pine flake bedding. I have seen them roll around in it a little bit. If so, what type and size should I provide? 2. How early can I offer treats (dried mealworms) to win some of the shy guys over? Should grit be provided if I do offer anything other than chick starter? 3. Since they have never been outside, and all of their equipment was NEW with them, do I need to worry about Fleas/lice/mites? I want to give them some short supervised grass time outside in the next week. Will I need to worry then? Can chicks be dusted with DE? Thanks in advance!