Fecha de publicación: 23/07/2015 Fuente: WIPO "apis mellifera" The invention relates to a prolonged-action acaricide composition against Varroa destructor which attacks bees, said composition comprising oxalic acid, glycerin, four-carbon dicarboxylic acid and formic acid, and to a method for the production thereof. The invention also relates to a cellulose strip embedded in said acaricide composition which is introduced in the hives, and to the methods for the production thereof.