The SHoRI is small lightweight and easy to operate fogging machine . The secret is in the microscopic particles it produces - up to 7 times finer than mist! The fog floats and penetrates deep into landscaped areas where mosquitoes hide - killing mosquitoes on contact and creating a 'mosquito-free' zone for up to 6 hours. This same effective system is used by professionals to kill mosquitoes. In about 5 minutes the fog is gone so you can start enjoying the Outsides again. When Outsides fill the insecticide tank with Diesel and Deltafog fogging insecticide. Start the fogger by connecting the butane gas can in fogger then and let pre-heat for at least 30-40 seconds. Keeping fogger upright and level simply pump the trigger at the rate of once every 3 – 4 seconds as you work your way around the Outside area you wish to treat. For Outside use only. Ensure you remove the upper part and insert in coilk cleaning water tank