Summit® Sticky Traps are an effective method for controlling insect pests on houseplants. These bright yellow sticky traps attract and capture flying insects such as fungus gnats, whiteflies, aphids, and thrips. When staked in the soil or hung from the plants, the bright yellow color is an irresistible attractant to these insect pests. Once they land on the stake, there is no escape. Replace the traps in 90 days or when covered in insects.