Swissinno Window Fly Trap

Traps flies on its adhesive inner surfaces - attracted to the light, flies settle on window panes where they gravitate towards the corners, enter the trap and are caught by the glue and die
Tests show that within 48 hours of placing these window traps, virtually all flies in a room will be caught
Trapped flies are hidden out of sight
With self-adhesive fixing pads

See installation video below:
(right-click on video then select play)