Barrettine Low Odour Woodworm & Boring Insect Killer 1 LBarrettine Low Odour Woodworm & Boring Insect Killer 1L Prevents and eradicates infestations of Woodworm, wood boring beetles and insects, larvae and eggs Deeply penetrating formula to kill infestations Protects uncontaminated timber against wood boring insect attack Post treatment decoration treated timbers can be polished, stained, varnished or painted when dry For use on all types of timber, rough, sawn or smooth (internal and external)