What lived in those trees must now find a new tree the actual lived in your yard must find a new place to call home. Bird droppings also can create maintenance issues with rooftop ventilators, AC units, skylights, systems and rainwater runoffs. https://Wiki.insidertoday.org/index.php/Reasons_For_Hiring_A_Pest_Control_Company_For_Your_Treatment_Of_Domestic_Pests