Many times in our hospital, hotel, factory or warehouse we need to spray chemicals for disinfection of certain areas.Using regular spraying technique is time consuming and causes a lot of undesired dampness in the area. Ultra Low Volume or ULV Fogger or Aerosol Generator or Cold Fogger is an answer to these problems. A ULV Fogger generates fog droplets by using a high volume of air at a low pressure. This enables droplets of a moreprecise and small size to be generated. Large number of very small droplets is required for penetration of the fog into highly obstructed areas. ULV foggers can also dispense formulations in a more concentrated form since unlike spraying, less diluent is required. Also, the ability to be able to calibrate the machine to produce droplets of the optimum size for the type of chemical being used make ULV fogging the method of choice whenever possible.