The appearance of black spots on leather goods inside a closet on an outside wall is a major red flag. Vinegar is a temporary, superficial fix that addresses the visible growth but completely misses the underlying cause. The mold you see is likely just the fruiting bodies; the main hyphal network is almost certainly growing within the wall itself, on the back of the drywall, or on the structural framing, feeding on the paper and wood.

For a situation like this, a professional inspection is absolutely necessary. DIY approaches are insufficient and potentially hazardous, as disturbing the wall without proper containment can aerosolize spores and spread the contamination throughout your home. Our inspection process involves using moisture meters, thermal imaging cameras to identify the condensation points, and borescopes to visually inspect inside the wall cavity without unnecessary demolition. This allows us to pinpoint the exact source of the moisture and the full extent of the mold growth.

Given the high probability of concealed growth, I strongly recommend you cease DIY treatment and contact a certified professional. Saniservice specializes in such diagnostics and remediation in accordance with Dubai Municipality guidelines. Please call us at 800-MOLDS (800-66537) or email hello@saniservice.com to schedule a comprehensive assessment and prevent further damage to your property and health.