Chick Grit vs. Chicken Grit

[C_Dzchicks]

At what age is it alright to start giving them chicken grit instead of chick grit? Mine are about 5 weeks old but when I get home I let them spend their afternoons in the grass in the coop and I'm sure they pick stuff up there besides their crumbles and I can't find chick grit anywhere. I may just have to order it online but I already have a bag of chicken grit.
Anybody know?

 

[Mrs.Puff]

They will be able to pick out small particles out of the chicken grit that they can swallow. Don't worry about it. They should do fine.

 

[C_Dzchicks]

Thanks!!