Spikes are the most common bird deterrent method and are suitable for window sills, roofs, railings, over outdoor air conditioning units, piping etc. They are used on surfaces where pigeons land and where we don’t want them to create permanent nests.  The spikes do not kill or hurt pigeons. We choose the appropriate spike model, according to the specific needs of the space. They can also be combined with other methods such as audio bird deterrent for better bird control.