Apple Crumble £3.50 Quantity: at £3.50 each Add To Basket Just imagine the warm aroma of hot, freshly stewed apples encased in a golden crumble topping with a sprinkling of cinnamon. Mmmm. To scent your room, you just put 1/4 of the Melt in your warmer or burner, and light an unscented tealight underneath. There is no need to add any water. The scent from each Wax Melt piece lasts for approximately 10-15 hours making them incredible value for money.