You'll want to keep leather at least 2 feet from a heat source to prevent it from drying out, and keep it out of direct sunlight to prevent fading. And do not use caustic household cleaners to clean leather. Instead, use a mild, nonacidic soap mixed with water and apply with an up-and-down or side-to-side motion (not in a circle). Clean an area larger than the spot, rinse with a damp cloth and allow it to dry for 24 hours. There is no guarantee that a spot can be removed from leather. When in doubt, call a professional before using any chemicals.