How to treat closet mold and prevent its return?« Back to Previous Page

Our bedroom closet on the outside wall has started to get these black speckles on the leather bags and shoes we stored there. It’s been really humid the last few weeks and I’m worried the moisture is getting trapped in there, especially since that wall feels colder than the others. What’s the best way to treat this and what can I buy locally, like a dehumidifier or something, to stop it from coming back?
Posted by Emily Martinez
Asked on April 25, 2026 10:35 pm
Move the affected items immediately. Wipe down leather goods with a diluted white vinegar solution (1 part vinegar to 1 part water) and allow them to dry completely away from the closet. For the closet itself, scrub the interior surfaces with the same solution to kill surface mould. Avoid bleach, as it doesn't kill the roots and its fumes can be hazardous in an enclosed space.

The problem is condensation caused by the temperature difference between your air-conditioned room and the humid outdoor air seeping into the cooler wall cavity. This creates a perfect breeding ground for mould. To prevent recurrence, you need to manage humidity and airflow. A small electric dehumidifier placed inside or near the closet can help significantly. Alternatively, reusable moisture absorber boxes filled with silica gel beads are a good passive solution and are widely available at local hardware stores.

Improving air circulation is critical. Leave the closet door ajar periodically and ensure bedroom AC vents are not blocked, allowing cool, dry air to circulate into the space. For a persistent issue, the wall itself may have an insulation or vapour barrier problem requiring a professional assessment to identify the moisture source. In Dubai's climate, this type of condensation on exterior walls is a common issue that often needs more than a surface clean to resolve permanently.
Posted by Sani Admin
Answered on April 27, 2026 3:56 pm