Vacuums and accessories are used to remove contaminants and hazardous materials from equipment and facilities. HEPA (high-efficiency particulate air) vacuums use powerful HEPA filters to remove harmful particulates, while electronics vacuums remove dust, dirt and toner from electronic equipment. Vacuum accessories include different types of brushes. Dusting brushes clean static-sensitive electronic components and equipment. Crevice brushes can access tight corners and loosen layered contaminants.