Non-toxic and odorless fly traps that last for months to stop bugs in your home. Transparent fly traps are almost invisible and will not mark windows after use. Flies and other insects will be attracted to windows and screens where the traps are placed. The fly catchers arrive ready to use. To use, remove the white strip from the back of the Fly Catcher and place trap on a window, pressing along the sticky side to attach trap to the glass. Hold one side of the trap and quickly pull off the cover sheet to expose the baited insect trapping glue. For best results, please see full use instructions on product label.