and fixedly secured to the blower motor and the rigid conduit 20 the blower motor includes an output shaft 24 including a plurality of first impeller blades mounted concentrically relative to the output shaft 24 with the first impeller blades 23 positioned in an offset relationship above a plurality of second impeller blades 25 mounted fixedly and concentrically to the output shaft 24 the fig4 illustrates the use of a three way switch 34 to include an on off and automatic position wherein in the automatic position the act of a cat being directed through the cover housing door 27 that is mounted to a cover housing door hinge to the cover housing side wall 18 effects actuation of the blower motor the hinge 28 is orthogonally oriented relative to the lower groove 18a and the door 27 including a door rear edge 29 in communication with the hinge 28 a first abutment flange 30 mounted orthogonally relative to the door rear edge 29 is arranged for actuation of a first contact switch 32 mounted to the slide wall adjacent the hinge to effect contact with the first abutment flange 30 wherein through a relay 41 effects actuation of the blower motor 22 through a timer mechanism 42 to maintain operation of the blower motor for a prolonged period of time subsequent to displacement of the door 27 a second contact switch 33 including a contact finger 35 fixedly mounted to an interior surface of the door 27 by means of a second lock flange 31 is mounted to a.