When washing climbing shoes, it's best to use a mild soap or specialized climbing shoe cleaner. Avoid using harsh detergents or chemicals that can potentially damage the shoe's materials or affect their performance. Look for soaps that are gentle and specifically formulated for cleaning delicate items. Some climbers prefer using mild dish soap, while others opt for specialized climbing shoe cleaners available on the market. These cleaners are designed to effectively remove dirt and odor without compromising the shoe's integrity. Whichever soap you choose, make sure to dilute it properly and follow the manufacturer's instructions. After cleaning, rinse the shoes thoroughly to remove any soap residue and allow them to air dry in a well-ventilated area.