Do you know what is ULV? Ultra Low Volume (ULV) means an ideal size of droplets to tackle pathogens, vector carriers and pests in the form of a fog or mist. Vectorfog ULV foggers generate a fog or mist formed of Ultra Low Volume (ULV) droplets of 5-50 microns in diameter and are proved in its functionality. Our Vectorfog ULV fogger is used predominately for the application of disinfectants, biocides, fungicides, and pesticides.