These 4-inch x 7-inch Sticky Traps unfold to expose nontoxic adhesive on both sides to cover approximately 30 square inches per trap. Thrip/Leafminer baits are colored blue to attract target insects, while the Aphid/Whitefly traps are yellow to entice aphids, whiteflies, leafhoppers, froghoppers, moths and more. Includes five traps.