Halloween, by nature, can provide interesting challenges for those responsible for removing stains. While most hard-candy stains can be removed by regular washing methods, chocolate stains are not so easy because they contain both greasy and non-greasy substances. For best results, try pretreating the area with drycleaning solvent and then place the affected area over several layers of white paper towels and blot. If the stain remains, blot with a mild detergent and then rinse with water. If these efforts still do not remove the stain, try using a solution of one teaspoon of white vinegar per cup of water. Rinse with water. If all other methods fail, you may need to use a bleach, but remember to test for colorfastness. Any remaining stain may be removed by laundering according to the care label instructions.