Grease, one of the toughest laundry stains around, resists most commercial spray applications. To clean, crush some chalk and sprinkle the dust on the grease stain. Let it stand overnight so the chalk can absorb the grease. In the morning, shake the garment and brush off the chalk dust. Launder in the warmest water safe for the garment. Chalk also makes a great stain remover for ring-around-the-collar and underarm sweat stains. Just rub the stain heavily with white chalk, let stand for 10 minutes, and then launder as usual.