Insect traps are an easy, no chemicals required method to fighting pests in your grow space. The bright yellow paper attracts insects, and the glue surface material traps them once they land. Sticky traps can be laid next to infested containers or hung in the air for general pest …control. Pests like gnats, white flies, black flies, fruit flies, thrips, fungus gnats, aphids, midges, and many other insects can be controlled through the use of sticky traps. A low cost, pesticide free alternative to other means of control, Sticky traps are indoor gardener’s first line of defense against pesky pests and annoying insects.