About the Product Goodknight Power Activ+ system is the most technologically Superior Liquid Vaporizer in India. The Combo Pack consists of a mosquito repellent liquid vaporizer & a plug-in electronic machine. The machine comes with dual-mode technology. The liquid refill contains 50% more Activ Molecules which makes it 50% more powerful. Goodknight Power Activ+ System ensures low electricity consumption & a consistent release of the Power Activ+. Goodknight Power Activ+ System is absolutely safe to use around children and families. It ensures complete family protection from Malaria, Chikungunya, and Dengue-causing mosquitoes. Our Power Activ+ system is economical on your pocket as well, with refill cartridges available separately in packs of 1,2,4, and 6 ensuring more savings with every refill.