Rotobrush International now offers anti-microbial brushes for air-duct cleaning. The brushes are available in 4 to 24 inches with options for soft and stiff bristles. They are treated with an Environmental Protection Agency-registered anti-microbial agent. The company claims that this agent preserves them and prevents odor, discoloration, staining, deterioration or corrosion of the bristles, which can be caused by fungi, mold and mildew.

Rotobrush International LLC, 801 Hanover Drive, Suite 700, Grapevine, Texas 76051; (800) 535-3878; www.rotobrush.com.