If they’re dirty, run them through the washing machine or replace them.
Use a soft cloth or a brush to remove any grime that may be stuck to the shoe’s leather surfaces.
Mix a solution of warm water and dish soap, dip a soft cloth into it, wring it out and wipe the exterior surfaces of the shoe.
Use a second clean, damp cloth to wipe off the soap. Dry with a towel. Warm, soapy water will also remove water stains and scuffs.