Catchmaster Stick Traps protect plants from Fungus Gnats, White Flies, Fruit flies, Gnats, Mosquitoes, Aphids, Thrips, Leaf Miners, Sciarid Flies, Lepidoptera, Diptera, Olive Tree Flies, and other flying insects. Effective and easy to use, this non-poisonous trap works well when hung at stake or plant level and comes with five twist ties to use for hanging. Place traps every 7 ft. for best results