Once the neutral was removed, the perimeter of the painting was fixed with 50% fish glue in deionised water.  The disinfection of the wood of the support was carried out by injection with 3% permethrin en Chile: small holes are made along the frame in the form of a grill, each 3 cm, to provide a good penetration of the product.  The holes are filled with soft coloured wax and one is protected against insects the support was reinforced.