Pigeons be gone

Yes. We have a pigeon problem. These birds are the rats of the bird world. Rodents. They sweep in off the rooftops and cast shadows over my windows, creating a Hitchcock-type effect throughout the house. They sit in our window boxes and hanging plants and destroy the flowers. What to do? I found this solution on the blog Boing Boing and was thrilled to realize that I am not the only one with this problem. Now... do they ship overseas?