Where might anthrax spores be found in buildings?

Anthrax spores may be found in horsehair plaster, old insulation containing animal fibres, or in dust disturbed during building works. They aren’t visible to the naked eye and can lie dormant for decades. High-risk areas are usually older walls, ceilings, and plasterwork. That’s why professional testing is essential — only a laboratory can confirm if spores are present.