This control program is based on the exclusion of the bird through a plastic or stainless steel spiked device, installed and designed to occupy the current perching/roosting locations. Anti-roosting pigeon spikes are the most efficient and the most cost-effective pigeon control device available.
Installed properly, the spikes occupy the space normally used for perching and roosting by the birds.
The anti-roosting spikes do NOT hurt the bird. It only prevents the birds from landing on your rooftops.
While simple in scope, the size of the spike must be matched to the species of bird.