One of the most important steps in the wildlife removal process is the sanitation and cleanup process. When animals enter into your home, they leave behind urine and fecal matter, nesting materials and ecto-parasites that can infest your home once their wildlife host is removed. In most cases it is necessary to remove old and soiled insulation and have it replaced with fresh new insulation. Also, when the animals walk on the insulation it becomes matted down and loses its ability to insulate.  Bat Guano, as shown in the picture, creates a severe health hazard and must be completely cleaned and chemically sanitized.