I don't see why not... As long as you watch her to make sure she doesn't shove it too far into her throat or something. If it breaks in half I'd take it away...because of course when it's too small it's a choaking hazard too. Ahyla is only about 4 months old and I give her "Graduates Finger Foods; for lil' ones learning to self-feed; biter biscuits". I know it says 10months plus, but Ahyla is already teething and she's usually in quite a bit of pain. :( Poor baby, our nights are horrible because of it. I don't want to give her tylonal unless it's really bad though, and I dont' want to use anbesol except for when she's really hurting too... Last thing I want is a lot of medication going into her system, iykwim... I'd rather do it naturally.
It is VERY messy though! She does very well with it.

I watch her like a hawk on its prey. :o