Once they're outside? My 6 week olds are in a 20x15' enclosure. There's some deep litter, weeds, gravel (pea sized, too big for them to swallow, I'd think), and I'm wondering if I should still be providing grit, or if they will find what they need on their own. They forage but also have food and water at all times. Oh, I do also have a pan with sand for dust bathing (which they have yet to use).