Pigeons, also known as “flying rats”, cause millions of dollars of damage to buildings every year. Pigeons do one of two things: they either roost or they nest. We get a lot of calls from building owners and the first thing we need to know is whether they are roosting or nesting, as the methodologies needed for remediation are different. If pigeons are roosting, we use different products to keep them off of the ledge than we would if they are nesting in an area. If the pigeons are nesting, we use Bird Barrier products for remediation.