Try Aerogard Home Mosquito Repellent Plug-in for up to 240 hours (30 nights) of protection against mosquitoes. Its fast-acting formula is powered by a plant based active ingredient and is scientifically proven to be effective in repelling mosquitoes around your family home. based on 8 hours use per night (manual shut off) · Protection with plant-based active ingredient · Scientifically proven to be effective against mosquitoes · Repels mosquitoes · Fast acting formula · Natural geraniol fragrance Country of Origin: Made in China (device) and India (refill).