- DIRECTIONS FOR USE.1. Peel off the yellow protective paper from the centre outwards. You will see that the paper is split in two. Apply the exposed flower print to the window. Top and bottom positions of the window are ideal locations for the trap.2. Once the trap is positioned peel off the white backing paper, starting from the corners. The trap is now ready to attract and control flies in your home.The sticker is easily removed when required and leaves no trace on the window.