Fuente: WIPO "tomato" A method to provide a bird- and/or rodent repellent polymer film is provided, the method comprises the steps of - providing a multilayered intermediate polymer film, comprising o a first outer polymer layer from a first polymer material comprising at least one bird- and/or rodent repellent component; o a second outer layer from a second polymer material and being free of bird- and/or rodent repellent components; o one or more intermediate layer from at least a first further polymer material; - converting the intermediate polymer film to one or more final polymer films thereby provided polymer film waste material; - reuse the polymer film waste material as additive to one or more of the at least one further polymer materials.