Cuprinol 5 star complete wood treatment is a clear solvent based wood treatment for the combined eradication of the two main enemies of timber rot and insect attack the formula kills not only dry rot and wet rot fungi but also wood boring beetle larvae woodworm its deep penetration ensures effective treatment and lasting protection against future attack this low odour formula has been specially developed with low aromatic solvents to make it more pleasant and convenient to use size 5 l