Attic Accumulation is a term used to describe the collection of items that can be found in an attic. This includes DUST, webs, and cobwebs. DUST is a fine powdery substance made up of tiny particles of earth or waste matter that can accumulate in an attic over time. Webs are sticky, intricate structures made by spiders to capture prey. Cobwebs are similar to webs but are made of thicker strands and are often found in corners and crevices of an attic. All three of these items are common attic accumulations.