Stand the canister on a heat-proof surface in the middle of the room.
Light the fuse, leave immediately and seal the door.
Leave sealed for at least 2 hours, then ventilate for 1–2 hours before going back in.
For a heavy infestation, repeat after 7–10 days.
Important
Use only in an empty room between crops — permethrin will damage living plants. Fumers get hot, so always use a heat-proof surface. Keep people, children, pets and fish out of the room while in use, and cover smoke alarms before lighting.
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