M.S.
Hi, M.. I honestly didn't read the other advice, so if this is repetitive, I'm sorry! I gave my son a teething biscuit at 9 months old. He was in his high chair and I was 4 feet from him doing dishes. All of a sudden, I heard this gagging/choking sound. I look over and my son is struggling for breath. I removed him from the high chair and gave him the Heinlick (spelling?), then he shot out the top of the teething biscuit. He had gnawed on the buiscit and the top portion (size of a quarter), broke of in his mouth and he choked on it. I have never been so terrified in my life. I held on to him as he cried, b/c it really scared him. So my advice would be to NEVER use them.
Some things I have tried since:
frozen wash cloth to chew on
Baby Orajel
Tylenol
Hyland's teeething tablets
Good luck, teething is so hard!