These sticky insect traps will attract and capture whiteflies, fungus gnats, winged aphids, thrips and other pests in gardens, greenhouses, and potted plants. Once the card is covered with insects, replace it with a fresh one. Safe control for flying insects Set of 9 traps and 3 stakes Set includes nine weatherproof 3" x 5" traps and three 11" stakes. Controls insects from larvae to adult