All insects have phototaxis. These sticky traps are specially designed in yellow which has great appeal to various plant pests.It attracts fruit flies, gnats, aphids, leafminers, white flies and other flying pests, and the extra strength glue captures and prevents the pests from flying .The -sided sticky traps are non-toxic.A absolutely eco-friendly and and economical way to control the pests on plants,totally environment-safe and pollution-free.With very strong adhesive on both sides, waterproof and long lasting. No need to worry about losing stickiness,just replace them after being fully covered with pests.butterfly Shape Great for capturing plant insects,such as aphids, leaf miners,fungus gnats,white flies,midges.Suitable for orchard,vegetable field,green house,potting and more.Just simply peel off two side cover sheets,bendablehook wire to the traps from stems, branches, planters, or stakes.Item Type: Yellow Sticky Trapscolour:yellowmaterial:PPsize:13cm long and 8cm widePackage Contents:120 x Yellow Sticky TrapsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.