Shree Incense Stick dengukiller is a naturally made mosquito repellent agarbatti. Fully safe for human being. low smoke for your safety. made with lemongrass / citronella oil and little perfume. premium quality agarbatti most effective mosquito Repellent , stick are 12 inch. upto 1 hour burning time. use one stick one time. for best result use continue two stick to kill mosquito. it's works in outdoor but indoor is better result.