Specially developed fly trap to effectively combat the nuisance caused by flies indoors without an insecticide. How it worksThe fly trap consists of a transparent adhesive strip that is discreetly attached directly to the window. The operation of the trap is based on the natural behavior of flying insects. Attracted by heat and UV light, they fly to the windows and walk into the trap. This fly trap can be used anywhere, such as homes, offices, caravans and holiday homes. Instructions for use Remove the red adhesive strip on the back and then apply the fly trap to the window at the bottom. Do not use on roof windows! Then press the trap at the bottom and remove the protective layer on the front of the trap with a jerk. This trap can be used during the season or as long as the fly trap is full of flies. Use 1 fly trap per window. You can easily remove the fly trap from the window after use without leaving any residue. Box of 4 pieces.