The invention relates to a sleeve (1) for covering wiring and piping with insecticidal effects, made of a plastic material. The sleeve comprises an insecticidal product permeating the plastic matrix forming the sleeve (1). The sleeve includes, as part of the manufacturing process thereof, a specific treatment with an insecticidal substance that enables said sleeve to have a repellent and/or deadly, effect on insects, i.e. an insecticide.
