The Fogmaster Jr. is constructed of corrosion resistant materials. Twist the power head to detach the tank and pour in the solution. Another half twist and you're ready to go. A switch located on the handle to run. Adjust output size droplet, from a fine light fog to a coarse mist, with the rotary valve. This is a great sized fogger for smaller applications, i.e., one room, garage, a crawl space, etc.