*INDIA S MOST POWERFUL LIQUID VAPOURISER: Latest and most advanced formulation from Good knight. *AUTOMATIC MODE MOVEMENT: Normal mode when there are few mosquitoes & Flash mode when there are many mosquitoes. *LONG-LASTING REFILL: Each refill lasts 45 nights, with superior protection against mosquitoes. *SAFE FOR CHILDREN: Completely safe to be used around children and family. *FOR EFFECTIVE RESULTS: Use with Good knight Gold Flash electric plug-in machine only.