I have spoken to the owner, numerous times, and the smell is getting quite intense.
Owner thinks it’s age and Denty Sticks will solve it, or help it. Owner is also notoriously dippy. The dog has had teeth out before but the smell is getting worse, it’s like something has died in his mouth. He’s 8.
I am wondering if I need to ramp up the concern as, to me, they look like they’re rotting but I’m a dog boarder not a vet! (Owner also not generally open to any perceived criticism.)