BIG D® WSD is concentrated, easy to use and effective. Just a small amount added to water or other cleaning products will destroy odors on contact without changing the properties of the cleaner. BIG D® deodorants actually eliminate odors, not just mask them. Nontoxic, nonflammable, biodegradable. WSD is versatile. Use it for mopping, shampooing, rinsing or in a hand sprayer or fogger.