You can spot clean leather by carefully rubbing the soiled area with an artist's eraser. A stain on leather that won't brush or wipe off should be taken to a leather cleaner as quickly as possible. Though you can try cleaning it yourself with a leather-cleaning product, you may end up doing more harm than good. You can protect both leather and suede articles by spraying them with a silicone spray that you can purchase at most shoe stores. If you are willing to take a chance, risking irreparable damage to the shoes, you can try to remove the blood stains with a 3% hydrogen peroxide solution or by covering the stains with a paste made of either salt or meat tenderizer and cold water. Let sit for 30 minutes, then sponge with cool water.