Thank you everyone. I'm afraid he is not a chewer. Unless he gets a marrow bone or something with meat on he won't expend his energy on chewing. There are plenty of things laying around for him to have a go at but he is not interested.
Thanks Alison I am going to see if I can budge it
Stewart he might like fish but I am wary since the SIBO dx as his digestion is very stable. He is on AB's two weeks on and two weeks off. Thank you anyway.
Thanks everyone who replied.
My poppet (woops mustn't tell him I call him that) will have clean teeth