A 30m reel of 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.

Simple, but highly effective, tested and proven. Can also deter rabbits and other pests.