cavity 11 is the suction section the two cavities 10 11 when fused together are located between the water closet bowl top and the bottom surface of the water closet seat the two compartment cavity is held in place by the same connection or taps that holds the toilet bowl seat and lid or cover to the water closet bowl via matching bores 14 in lower pan 6 note that fig1 shows the general arrangement of the operating unit with the upper pan 7 removed the assembly is moter driven via motor 28 the motor driven fan impeller 32 spins whereby air is sucked from the water closet bowl through holes 20 and 21 in suction cavity 11 the air is sucked through the saturated filter wick 23 and passes through the interconnecting chamber 12 through port 36 the fan input opening and discharged out of the fan output opening 37 into the pressure cavity or chamber 10 it is this circulation of airflow that blankets the upper surface of the closet bowl to permit the chemical union the fan motor is controlled by an automatically operated micro switch 30 and is operated continuously as soon as weight is applied to the seat the micro switch 30 terminates or stops the fan motor 28 and fan impeller 32 when the weight is removed an optical manuel switch 31 may be used in.