A mild dish soap mixed with warm water can effectively remove dirt and grease from hand tools for general cleaning. Use a sponge or rag to scrub the tools gently, then rinse them thoroughly. Remember to dry the tools properly to prevent any rust. Several commercial cleaners are also available specifically designed for cleaning hand and power tools. These cleaners typically have degreasing properties and can effectively remove stubborn stains and grime. Follow the instructions on the cleaner's packaging for the best results.