How to Kill Mold in Fiberglass Vents

Put on a dust mask before you begin cleaning your fiberglass vents so you do not inhale the spores. Also, wear thick rubber gloves to avoid direct contact.

Remove the vents from the wall or floor using a flat-head screwdriver to better determine where the mold is in the vent.

Insert a suction attachment to your vacuum cleaner. Tape the joint so you do not lose the attachment in your duct work. Vacuum dirt, dust and mold from the vents and ducts using the cleaner.

Pour clean, warm water in the bucket and dilute a cup of bleach into it. Soak a sponge in the bleach solution before applying it over the infected vents to remove traces of mold growth and prevent re-growth. Ensure you completely cover the area for maximum effect.

Allow the bleach solution to sit for 10 minutes before rinsing it off with cold water.

Dilute a teaspoon of mild dishwashing liquid in a gallon of warm water and set the bucket inside the sink. Immerse the vent cover in the bucket for five to 10 minutes to loosen the mold and accumulated grime, dirt and debris.

Scrub both sides of the vent cover using a plastic scrubber. If required, use a soft-bristled toothbrush to access the mold caught between the baffles of the vent. Manipulate the bristles to access the mold located in the corners or edges of the slats.

Lift the vent in one hand and pour out the dirty water from the bucket in the sink. Rinse out the vent under warm water to remove any dishwashing debris.

Spread a dry towel on the counter. Dry the vent with a clean cloth before setting it over the towel. Allow the vent to dry thoroughly before re-installing it.