Finally a safe and economical way to deal with pests. These Sticky Traps do the job for flying insects. The 4"x7" traps fold open to allow for an exposed 4"x14" sticky yellow surface. These are non-toxic, odorless, and weather proof. The adhesive lasts until the grid is filled with bugs or dust. The larger version is endorsed and used by the USDA, the California Deptartment of Food and Agriculture, and entomologists world wide.