The Fogmaster Jr. is constructed of corrosion resistant materials. Twist the power head to detach the tank and pour in the solution. Anotherhalf twist and you’re ready to go. A switch locatedon 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.)