Some way or the other, those mosquito repellents we are accustomed to are harmful to the human body. Be it the smoke dispensing coil or the liquid repellent for the matter, both have their cons. Over at Mint pass, they have developed a coil shaped electric mosquito repellent that keeps mosquitoes away, imposing no threat to our personal selves.
The LED light shows the work in progress, while the essence cord dispenses Citronella oil (effective at repelling mosquitoes) all night long.
– Source : http://www.coolbuzz.org