The 3oz. Wickles are the perfect answer to those who don't want an open flame. They come in a specially designed plastic container designed to be used on a candle or tart warmer (sold separately on site) and NOT on an oil burner. These warm up to a much higher temperature and are not recommended. The fact that they warm up in the original container makes ease of changing out fragrances amazingly easy. Just pop on a new wonder whenever you want to. No mess, no fuss. Available in over 30 unique scents.