It is always a hard call when it comes to our pets and when is enough, enough. I have spent a fortune on Koko so I know how you feel. I have probably spent 6k+ on her and she is just 4 now. I had a $3700 bill for double CCL surgery when she was less than one.

Although 12 is considered old in retriever years I know you still want to do all you can to keep your beloved Jet comfortable..

You might try some of the things I posted that worked with Koko. I think her food was one of the issues we were fighting in addition to the allergies to household mold/dust mites etc. If she still has scabs you might try the lime/sulphur treatment along with the Etiderm shampoo.

Good luck to you and Jet.