The Curtis Dyna Fog Tornado Flex Fogger is a professional fogger intended to be used with precision and versatility. The 3-gallon tank of the thermal fogger allows it to be used for longer periods. The fogger is also equipped with a large formulation filter with a removable screen and a precision control metering valve that enables the ability to adjust from low amounts to a heavy mist of 5 gallons in an hour. The Curtis Dyna Fog Tornado Flex Fogger can be used with a spectrum of chemicals, such as herbicides, miticides, disinfectants, sealants, fungicides, and duct sealants, to name a few. This fogger works efficiently for most indoor and outdoor applications.