Tea tree oil is a natural medication for skin infections in dogs. Many effective topical antibacterial products can be used in antibiotics or shampoo therapy. You can use some natural products like tea tree oil which consists of natural tea tree oil.  It is known to be an excellent antifungal and antibacterial element. It can soothe the itchy skin and kill scabies, fleas, and yeast. It can be applied every day a couple of times on the affected area of the skin.