A backpack sprayer is a portable device used for applying liquids, such as pesticides or fertilizers, to plants and gardens. It consists of a tank that holds the liquid, straps for wearing it on the back, and a nozzle for spraying. This design allows users to easily carry the sprayer while providing a comfortable way to cover large areas. Backpack sprayers are commonly used in agriculture, landscaping, and gardening. They come in various sizes and types, including manual and battery-operated models. Many users appreciate their efficiency and ability to reach difficult areas without the need for heavy machinery.