Haxnicks bird-scaring 'humming line' - simply tie between two posts for an ever-varying sound which bird won't go near. Even in light breezes, the line emits a penetrating humm and vibrations which birds cannot stand. As the sound and movement vary constantly, the birds can't get used to it either. Each pack contains a length of 30m.
Simple, but highly effective, tested and proven. Can also deter rabbits and other pests.