Bird control deterrent spikes work by reducing the area available for birds to land on. This deters birds, such as seagulls, pigeons and crows to land elsewhere. The birds will not come into contact with the spikes and so remain unharmed. As a result, the Royal Society for the Protection of Birds recommend bird spikes as an effective and humane deterrant. Bird spikes can be placed along walls and signage, CCTV cameras and guttering in preventing birds from landing.