Scent Bomb gel disks utilize revolutionary technology in gel fragrance. Typical gel will hold fragrance for a long time, but if you try putting a gel candle in your car it will melt and cause a huge mess. Scent Bomb gel disks utilize new technology that allows for the gel to withstand high heat so that you can experience the long lasting fragrance without the mess! Just peel the top and pop one under the seat of your car or in a bathroom and the fragrance will last and last!!