Scentsy Wickless Candles is a new company that has only been in business since 2004!! Safer alternative to regular candles, no flames, soot or toxins to worry about. Completely safe to leave on 24-7, the wax does not evaporate at all!! The scents will gradually diminish over the 8-10 hours each cube lasts. Warmers run on electricity & are heated by low watt bulbs, 25W bulbs for the Full Size Warmers, 20W bulbs for the Mid-Size Warmers & 15W bulbs for the Plug-Ins. An amazing product that will make your entire house smell wonderful & who doesn't like coming home to a wonderful smelling home? Check these products out & you will love them once you make your first purchase.......you will be hooked=)