Pigeon spikes
Bird spikes are the devices designed to keep birds from perching on
the edges, parapets, pipes, beams, cutouts and ledges of building
structures. They are easy to install and are available in different
shapes and sizes.

Pigeon spikes are one of the most effective tools used as a pigeon
control measure. They are usually made from metals such as tin, alloy,
aluminium, or clear acrylic composite plastics. The overall
effectiveness of pigeon spikes is questionable, as pigeons often
collect debris such as pine needles and drop them over the spikes to
make nests.

Bird nets:
Bird net can be used as an effective pigeon control tool. Nets are
generally useful in covering large areas having a proper
infrastructure to secure the nets with hooks and screws. They are
ideal for areas such as patio covers, rooftops and courtyards. A
properly installed net can act as an impenetrable barrier against
pigeons. The major disadvantage of pigeon nets is that they are
costlier than bird spikes and are difficult to install.

Electric bird wires:
Electric bird wires are designed to give mild shock to birds when they
step on the line. The current inside the wires is of a low intensity
and is meant just to frighten the birds and not kill them. The only
disadvantage of this pigeon control measure is, they do not work in
case of rain or snowfall.

FOR MORE INFO ON PIGEON CONTROL please VISIT :
http://the-bird-control.info