Blue Sticky Traps attract and catches thrips and leafminers. The easy-to-open 4"x7" trap reverse folds to expose 4"x14" sticky surface with grid for precision monitoring purposes. Approximately 30 square inch adhesive area. Non-poisonous and weatherproof. Punched with hole and twist-tie provided to easily hang trap. Easy to handle and count insects without getting sticky. 5 traps per package.