Do synthetic carpets contribute to microplastic exposure at home?

Synthetic carpets made from nylon, polyester, or polypropylene are a major source of indoor microplastic fibers. Foot traffic, vacuuming, and general wear constantly break down carpet fibers into airborne microplastic particles. Studies have found that homes with synthetic carpets have significantly higher indoor microplastic concentrations in air and dust compared to homes with hard floors or natural-fiber rugs.

Infants and young children who crawl and play on carpeted floors face disproportionate exposure. They breathe air closer to the carpet surface where fiber concentrations are highest and ingest carpet fibers through hand-to-mouth behavior. Flame retardant chemicals applied to carpet padding add another layer of concern, as these chemicals migrate into the dust that collects in carpet fibers.

Natural-fiber alternatives include wool rugs, jute, sisal, seagrass, and organic cotton area rugs. Wool carpeting is naturally flame-resistant, stain-resistant, and durable. If replacing wall-to-wall synthetic carpet is not feasible, using a HEPA-filter vacuum and placing natural-fiber rugs in high-use areas can help reduce direct exposure.