JET BLACK EZ SoluPak is a proprietary blend of environmentally friendly, nontoxic, water-soluble dyes formulated to reduce sunlight penetration and impart a natural black color when applied to ponds, lakes, and fountains. JET BLACK EZ SoluPaks are protected by a unique, waterproof, foil-lined over pack to prevent accidental staining while handling. JET BLACK, and its water-soluble packaging, dissolve quickly and are nontoxic to turf grass, birds, mammals, reptiles, fish, or other aquatic species. Irrigation, swimming, and other recreational uses are approved during and following the use of this product. Applications to chlorinated water may require more frequent treatment.