Tiny Worms on Florida Lanai After Rain: BT Controls Them

What They Are

1-inch thin worms after heavy rain = likely caterpillars (armyworms, cutworms) or nematodes. BT works on caterpillars.

Treatment

• BT (Dipel, MVP) dust or spray on lanai screens, floor, plants.
• Non-toxic to people, pets.
• Reapply after heavy rain.

Source

Gardens Alive or local garden center.