Fomei High Effect Dual-Sided Yellow Sticky Fly Traps Whitefly, for Leaf Mine Double coated import glue, no chemical composition, environmental safety, safe for children and pets. The yellow color attracts the bugs, draws pests like a magnet, the trap effect is remarkable. The effective for up to 2 months. Once stuck, unable to escape, specially designed for flying plant pests. For Leaf Miner, Aphids, Fungus, Mosquitoes & Other Flying Insects are effective. And the adhesive is waterproof and UV resistance,so it can last very long time until it is full of flies. Once you have hung them you don't have to do anything else to them. Applicable Place: Greenhouses, orchards, tea plantations, open field vegetables, flowers, animal farm, family room, residential gardens etc.