A stand to hold Yellow Sticky Traps
These traps catch bug to keep them away from your plants
You can find these traps online or at the stores.(Example): Amazon.com : Gideal 20-Pack Dual-Sided Yellow Sticky Traps for Flying Plant Insect Such as Fungus Gnats, Whiteflies, Aphids, Leafminers,Thrips - (6x8 Inches, Included 20pcs Twist Ties) : Patio, Lawn & Garden