At what age can chicks have scratch

[TMNTCkins]

Ok
I have never used scratch and I have had chickens for over two yrs. Never really thought about it until someone gave me two bags of it. I have 20 adult ckns and 12 4 wk old chicks. At what age can they have it ? It should be just a treat right?
Thanks. I feel stupied asking such a silly question!

 

[barred-rocks-rock]

about 6-8 weeks old

 

[cafarmgirl]

It's fine as a treat, just make sure they are getting grit when you start giving it to them.

 

[TMNTCkins]

Ok thanks.