An apparatus and method for accurately measuring and dispensing a predetermined amount of product from a dispensing system to a given surface area is disclosed. The dispensing system (100) includes a container (102) having a main chamber (106) to hold product and a dosing chamber (108) having an opening (110) in communication with the main chamber (106). The dosing chamber (108) is configured to hold a metered amount of product (112) received from the main chamber (106). A spray head (128) when connected to the container (102) is brought into operable and fluid communication with a dip tube (114), optionally cut to a selected length, which is positioned within the dosing chamber (108) for dispensing by activation of a trigger (136) product (112) to a given surface area or air space.