Sorry to hear about Bennett - Jovi does the same thing - no infection, no ear mites - every so often she will scratch at her ear and let out a high pitched screech. She mostly does it early in the am and late evening - it is so frustrating cause I don't wanther to be in pain but i can't run her to the vet every other day either... we are trying coconut oil on them now - keeping my fingers crossed any other suggestions would be appreciated.