Asbestos-containing materials (ACMs) are often concealed within your home's walls, ceilings, flooring, and insulation, and can be inadvertently disturbed during routine home repairs, renovations, or even simple maintenance, releasing dangerous fibers. Identifying these materials requires expert inspection, specialized laboratory testing (like Polarized Light Microscopy - PLM), and precise air quality analysis, as their presence is not always visible to the naked eye.