How to safely test and clean suspected mold?« Back to Previous Page

That damp wall behind the wardrobe is a very common source of the symptoms you're describing, especially with our high humidity. The black spots are likely mold feeding on organic material in the building dust, exacerbated by condensation from the AC and recent weather.

For testing, a professional inspection is strongly recommended in this case because of the health symptoms and hidden location. They will use moisture meters to find the exact dampness source and take an air or surface sample for a certified microbiology lab. This lab culture is crucial—it identifies the specific mold species and concentration, which determines the proper remediation protocol and confirms if it’s the cause of the allergies.

Do not attempt to clean it with bleach or disinfectant yourself. Disturbing it without proper containment will aerosolize the spores, potentially making your kids' coughing worse. The underlying moisture issue must be fixed first; otherwise, it will return within weeks.

A proper remediation company will seal off the area, use HEPA filtration to capture spores, remove the contaminated materials, and treat the area with EPA-approved antimicrobials. They should also diagnose the moisture source—often it's a small plumbing leak, capillary rise from the slab, or condensation from an AC line. Finally, request the post-remediation verification report from the lab to confirm the spore count has returned to normal indoor levels. This evidence-based approach is the only way to resolve the problem safely and permanently.