Captain Jack's™ LawnWeed Brew offers selective control of weeds, disease, moss, algae, and lichens in lawns. The active ingredient is derived from naturally occurring iron found in nature. This Brew is specifically formulated with Iron (Fe) to control broadleaf weeds, disease, moss and algae without killing the grass. It works quickly to kill many common weeds down to the root like dandelion, clover, chickweed, and more. Dying weeds will be seen within hours of application. The product is rainfast in three hours, and people and pets can safely enter the treated area as soon as the spray dries. No manual mixing required - connects directly to the hose. Ready-to-spray with hose end connection.