My chicks are now 2 1/2 weeks old and I am thinking about getting some mealworms for them when I go to town tomorrow. Do I need to buy some grit for them too? I am also curious if I should sprinkle out the grit with the worms or if I need to add it to their feed. My chick starter feed does not contain any grit. Also, I am wondering about feeding them some yogurt or applesauce. Is this okay or should I steer clear for now?