bacbbe5f_elphia_County_Master_Gardeners__How_to_DIY
[Management Method] Yellow “Sticky Traps” [Who/What it Manages] Whitefly, aphids, thrips, leafhoppers, moths, fruit flies, fungus gnats [How to DIY] 
Use yellow poster board or color an index card with yellow marker. Cut into 1”x3” pieces. Fold in half around a toothpick. Secure (I use glue stick) Paint with honey or petroleum jelly on both sides of flag. Push toothpick into soil. Insects will stick and die. Replace when there’s more full space than empty space on card.
Philadelphia County Master Gardeners
How to DIY