I just wanted to say thank you so much for your wonderful product! I have been plagued by wood pigeons visiting my next door neighbour's 'forest' for the last 3 years. After installing your spikes I have hardly seen a pigeon since - I can't believe it!! It only took me an hour to apply the spikes to my rather tall fence panels - and I am a lone woman. I can now enjoy all my climbing plants, mirrors, clocks and wall art free from all the dirt and noise created by the birds. Many many thanks for a brilliant product - I wish you every success.