Allersearch Pet+ Oatmeal Dog Shampoo 1 Gallon (128 Oz.) Washes off allergy causing dog dander. Conditions dog's skin while neutralizing allergens, reducing dander and destroying odor. Helps protect your dog from fleas and ticks. Hypoallergenic formula. No dyes or ammoniates. Made with plant and natural products. All natural, biodegradable and fragrance free. One treatment lasts up to 30 days.