My chicks are 3 weeks old. Treats have been suggested as a way to make them friendlier. Anyway, so far I have given worms from the garden and mealworms from Petco - both a big hit. I've read that if you give them anything but the chick starter grumble they need grit. I purchased chick grit (not layer grit - I know they can't tolerate the calcium when this small) but the bag says it's for chicks 10 weeks and older. Can I put a little bowl out for them to use free choice now so I don't have to worry when I give them treats or is there some other product I should be using? Thanks!