of engagement from rim 38 of the pressurized container 31 and permitting the pressurized container 31 to be thrust toward the entry section 36 of the passageway 41 in the body member 11 by means of spring 33 to the position illustrated in fig5 in this position the entry section 36 depresses the dispensing spout 35 of the pressurized container 31 causing the chemical 13 to be discharged through the passageway 41 then into the area to be protected as shown in fig2 it is also important in this embodiment that the fluid dispensing element comprises of a dispensing valve 190 having a projecting dispensing spout 35 which when depressed causes fluid discharge therethrough the fluid passageway 41 contains the fluid dispensing actuating means in the form of a funnel shaped entry section 36 which engages the projecting dispensing spout 35 and forms a seal between the entry section 36 of passageway 41 and the projecting dispensing spout 35 it is an important feature that the trigger 7 be rotatable in this embodiment and that the trigger latch 29 slide freely on the rim 38 of the pressurized container 31 and hence present a surface which will ride smoothly when the trigger 7 is pulled as a consequence the trigger 7 may be easily withdrawn from engagement without substantial force yet when the trigger 7 is positioned in engagement with rim 38 on the pressurized container 31 it serves to positively retain the pressurized container 31 in its cocked position hence substantially less force is required to trigger the device 6 of the present invention than would be required if the pressurized container 31 were retained in its cocked position by means of a.