The present invention provides a device and method to repel flying pests from unwanted areas. The device comprises an optically clear tube containing a clear liquid having suspended therein a plurality of reflective metal reflective flakes. The contents of the tube are tightly sealed with an end cap at either end of the tube, and the end caps have a string attached thereto to allow a user to hang the tube from a support. Incoming light rays which hit the plurality of reflective flakes are reflected to produce outgoing light rays. Flying pests located in the vicinity are attracted to the outgoing reflected light rays and fly away from the device in substantially the same path and the same direction as one or more of the outgoing reflected light rays, and thus away from the area where they are unwanted.
