Solar dryers are devices that use sunlight to remove moisture from food and other materials. They work by trapping heat from the sun, which helps to evaporate water content, preserving the items being dried. This method is energy-efficient and environmentally friendly, making it a popular choice for drying fruits, vegetables, and herbs. These dryers come in various designs, including solar tents, solar boxes, and solar trays. Each type maximizes sunlight exposure while minimizing contamination from dust and insects. Solar dryers are especially useful in regions with abundant sunlight and can significantly extend the shelf life of perishable goods.