Often cavity nesting birds gain access into small slits and openings that can not be treated with conventional exclusion products. In these cases we use a commercial grade closed cell polyethylene foam.
The foam is cut and fitted to close all the openings. The foam blockers are installed with mastic, and sometimes covered by a thin piece of metal. The foam blockers can be painted to match the building exterior.
Primary treatment areas are on the underside of docks, roof overhangs, canopies, walkway roofs, and other areas where small holes or cavities allow harboring birds.