Dichlorvos (DDVP) impregnated polyvinylchloride strips (Vapona, S.W.A.T.) are used worldwide for fumigation of enclosed spaces. The effective compound based on chlorine and phosphorus, has been shown to cause both artifact and health damage. Damages reported are: corrosion (iron, steel, brass, silver, tin, lead, baked enamel); fading of pigments, softening of resins and glues, dissolution of polystyrene, yellowing of silk and deterioration of leather. The work reports extensive damage to wool fabrics. Tables, graphs, istogramms, 27 references. -- ICCROM