I have been very fortunate to not have dogs that have had problems with chewing and scratching. Dogs will scratch for a number of reasons. They truly may have itchy skin, but they can also scratch and bite their fur out of stress too. Sometimes the dogs that will scratch or that will get hot spots can be dictated by the breed. Advance Chew Deterrent will help eliminate fur biting, hair chewing and skin scratching due to hot spots. It can also be used on shoes, clothing and furniture to deter chewing.