My dog chubby, is about a year old, maybe a few months over a year, She has long hair, and he constantly is scratching or licking or biting himself, we've tried everything, we've given him 2 flea baths, flea powder, shaving him, it doesnt eam to go away, hes starting to get sores from wheres he is itching, we dont have any money to take him to the vet, so is there any way we can help him stop without having to go to the vet? and what is the cause?