Barrettine Woodworm Killer is a traditional deep penetrating low odour oil/spirit based woodworm killer. It prevents and exterminates woodworm and wood boring insects from treated timber. This low odour formulation is suitable for use on all types of timber, rough, sawn or smooth, for internal and external use. Treated timbers can be polished, stained, varnished or painted when dry. Approved under COPR/BPR. Harmless to plants and pets when dry. Kills all common insects including Common Furniture Beetle, House Longhorn Beetle, Powder Post Beetle and wood boring Weevils. Kills larvae and eggs on direct contact. Ensure wood to be treated is dry, free from dirt and repellent coatings such as paint or varnish.