
Hi Butler 1. What is F4D
Have you seriously considered changing his diet to raw meat. It seems that so many dogs these days are having problems with the dry "complete" cereal based rations that so many vets unfortunately promote.
I know that not everyone can cope with the raw issue but there are many suppliers and pet stores who supply easy to use raw meat. Change over carefully, I have never found this difficult. You may be surprised with the result and a happier healthier dog with less problems too.
Having said that a friend of mine had a dog that was constantly scratching, the poor thing had no peace it made me itch just watching him and at one stage his coat was thinning badly. There was nothing visible on his skin no mites, no fleas, no lice, I suggested she spoke to her vet and requested a treatment of "Advantix", the result was a much happier dog with no scratching or itches. !!!!