With All Mightypacs Free and Clear Laundry Detergent, you get a gentle laundry detergent that is safe for all washers. Conveniently pre-measured single pac contains the right combination of powerful detergent. It dissolves completely, leaving nothing behind but clean. Hypoallergenic pacs are clinically proven to be gentle on skin. Tough on stains and designed to make no mess, each pac helps remove three of the top everyday allergens - dust mite matter, cat and dog dander - as well as certain fragrances. It is safe for all washing machines, including high efficiency. Pacs are simple to use. Place one pac directly in washing machine drum.