Cling film was once considered a kitchen essential and champion of convenience.
But in a bid to save the planet and reduce hefty waste-collection bills, primary schools are leading an anti-cling film crusade.
It has not been easy going - lawyers from Glad Wrap even issued one Hawke's Bay school with an infringement notice after it referred to the brand name in a note to parents.
But many schools are now reporting a 90 per cent uptake of the "litterless lunch" initiative.
Kate Norton, a teacher at Point View Primary in East Auckland, said parents were under instructions to avoid cling film and small packaged snacks.