You will eventually run out of wick at some point. Now you can finally enjoy excess wax with this jar warmer ! Also perfect to enjoy the fragrance release of our candles with less fuss of having to keep an eye on a burning candle. This jar warmer is also equipped with an automatic shut off after 8 hours. Surface diameter large enough to fit all of our candles 4, 9, and 11oz. Plug in and enjoy !!