Here's how to get wax off of anything made of glass. You'll need extreme cold or heat, a credit card, razor-blade scraper and toothpicks. For wax on a smooth-glass surface, gently nudge with the edge of a plastic credit card. If it doesn't come off cleanly at room temperature, chill it with an ice cube -- and try again. If that doesn't work, use a razor-blade scraper. Go easy so as not to scratch the surface. When glass items are small -- like candlestick holders -- put them in the freezer for a while. Puddled wax and droplets should pop right off. For irregular glass surfaces, use the same cooling and removal techniques, then clean deep into crevices with a toothpick. For stubborn wax in cracks and crevices, heat with a hair dryer or with hot water first. Your best defense next time? A few drops of water wherever wax may fall works wonders.