The first step in scent elimination is odor free clothes. Besides cleaning your hunting clothing without adding any odor, Scent Killer Laundry Detergent actually goes a step further and aggressively attacks odors as it cleans. It contains no U.V. Brighteners, so it will not make your hunting clothing more visible to deer or other big game animals. This high efficiency formula is compatible with both Standard and High Efficiency washing machines. FeaturesSpecial High Efficiency formulation is compatible with both standard and high efficiency washing machinesCleans as it washes away odors without adding any odorSuper Charged Formula fights odor as it cleansContains no UV-Brighteners