Cromar Universal Dry Rot & Woodworm Killer+ is a solvent-borne product based on low viscosity linseed oil. It contains active ingredients effective against wood-destroying fungi, wood-discolouring fungi (blue stain) and wood-boring insects. It penetrates easily into wood and thereby gets deep into inner layers. It is moisture regulating and provides an adhesive surface for subsequent with finishing paints (top coats). After drying, it is odourless.