A mounting device 2 comprising at attachment means 6 for attaching the device to a surface and at least one hole or cavity to insert a fruit fly trap (see figures 4 and 5). The attachment means may be adhesive tape, a magnet, a hook, a screw, a nail, a thumb tack, or a push pin. The invention simplifies placement and replacement of fruit fly traps. It can reduce the complexity of installing new traps for flying insects. It also allows for the trap to be located in an ideal spot for catching said flying insects.