[Gpdd] Teeth

[McMonigle, Ron]

I am new t0 gpdd.
I have rescued several piggies over the years and now have seven.
My problem is with their teeth.
I cannot get them to chew on sticks to keep their teeth in check.  I
also tried some from our apple tree twigs but still no results.
I read that you could give them veggie dog biscuits but the only ones I
could find have potatoes in them which I understand are poisonous to my
piggies. 
 
Any suggestions.
Thanks