http://www.egully.com/products/All-Out-Liquid-Vaporizer-90-Nights-Refill-Pack-of-3.html Product Description All Out Liquid Vaporizer 90 Nights Refill Pack (Buy 2 Get 1 FREE) Details of All Out Liquid Vaporizer Refill 90 Nights : All Out Liquid Vaporizer 90 Nights Refill is an effective protection against mosquitoes transmiting diseases like malaria, chicungunya and dengue. Plug-in the heater and refill in an upright position.