The Bio-Fresh fogger can be used to apply (fog) Bio-Fresh cd into duct-work or other ventilating systems. The Bio-Fresh fogger is made of a one-piece, seamless heavy-duty copolymer. It uses a 48 flexible hose to facilitate application into duct-work, and it is adjustable from 0 18 oz. per minute with particle sizes up to 80 microns. It is an ideal instrument for dispensing Bio-Fresh cd into enclosed ventilating duct-work for disinfecting the interior surfaces.