Zymox topical Pet spray Hydrocortisone 1% Infections Wound Itching Dog & Cat 2oz Use Zymox spray to treat bacterial, fungal, or yeast infections on your dog or cat. Zymox can also help with ringworm symptoms. Zymox Spray with 1% Hydrocortisone offers a powerful, natural cure to aid in the treatment of many different skin infections. Zymox Spray may also be used on other dermatitis and skin related ailments. This enzyme based formula is safe for use on dogs, cats, and in other veterinary recommended situations.