This powerful mosquito repellent refill pack uses an herbal formula to keep pesky insects away. Containing 45ml of concentrate, it is designed to fit all types of vaporizer machines for quick and easy refills. Introduced by Mandira Manufacturing, this product uses their proprietary FRT technology to deliver 150% stronger protection against mosquitoes and other harmful bugs. Whether enjoying time outdoors in the evening or trying to get a good night's sleep indoors, the fast-acting vapors create a protective zone free from flying and biting pests. Lightweight and portable, simply insert the refill pack into any vaporizer to refresh its reservoir for multiple weeks of insect-free relaxation.