clorox wipes, lysol spray (test in Inconspicuous area first), or mild antibacterial moisturizing soap. The soap is the best method for the leather in the long run - just use a soft cloth and scrub the suds into the leather and allow them to dry. Do not saturate the leather surface and do not rinse the suds off. Let them dry to a haze and then remove with a damp cloth. The moisturizing soap should protect the leather from drying out, but finishing off with a leather conditioner would be ideal.