How to Get Rid of Mold in Your Home (Including Your Washing Machine)

Mould in a home is a moisture problem wearing a costume. You can clean the surface all day, but if the water source remains, it comes back within weeks. This guide covers where mould hides in North Texas homes, how to remove it safely, and when it stops being a cleaning job and becomes a remediation job.

Why Texas Homes Get Mould

Our summers combine high humidity with air conditioning, which means condensation on cold surfaces: around vents, behind furniture on exterior walls, inside window frames, and in the drain pan of the AC unit itself. Add a slab foundation, occasional heavy storms, and homes sealed tight for energy efficiency, and you have the conditions mould needs. It requires only moisture, a food source such as drywall paper or dust, and time.

The Signs You Should Not Ignore

• A musty, earthy smell that returns after you clean. Smell is often the first and only early sign.
• Staining or discolouration on ceilings, around windows, along baseboards or behind furniture, particularly patterns that spread outward.
• Bubbling, peeling or warping paint, wallpaper or flooring, which indicates moisture behind the surface.
• Symptoms that improve when you leave the house and return when you come back: congestion, itchy eyes, headaches, coughing.
• A history of water anywhere: a roof leak, a burst supply line, a slab leak, a dishwasher overflow. Mould can begin within twenty-four to forty-eight hours of water exposure.

The Washing Machine Nobody Suspects

Front-loading washers are the most common hidden source of mould smell in a home. Water sits in the rubber door gasket and the detergent drawer, the door stays shut between loads, and the machine never dries out. Then your clean laundry smells faintly sour.

To fix it: pull back the rubber gasket and wipe out the fold with a diluted bleach or vinegar solution, including the drain holes hidden in the bottom of it. Remove the detergent drawer completely and wash it. Run a hot cycle with a washing machine cleaner or two cups of white vinegar, then wipe the drum dry. Clean the drain pump filter behind the small access panel at the base, where standing water and lint collect.

Then prevent it: leave the door and detergent drawer open between loads, use high-efficiency detergent and use less of it, and take laundry out promptly. Excess detergent is the most common cause; it does not rinse away and becomes the food source.

Removing Surface Mould Safely

For a small area on a hard, non-porous surface (tile, glass, sealed countertop, tub surround) under roughly ten square feet, this is a cleaning job:

1. Protect yourself. N95 mask, gloves, eye protection. Disturbing mould releases spores.
2. Ventilate the room and close it off from the rest of the house so spores do not travel.
3. Clean with detergent and water first to physically remove the growth. Removal matters more than killing it; dead spores still cause allergic reactions.
4. Then disinfect the surface. Never mix bleach with ammonia or acidic cleaners.
5. Dry it completely and quickly. Fans, dehumidifier, open windows if the outside air is dry.

On porous materials such as drywall, ceiling tiles, carpet padding, insulation and unsealed wood, surface cleaning does not work. The growth is inside the material. Those materials should be removed and replaced.

When to Call a Professional Instead

Stop and call a remediation specialist if the affected area is larger than about ten square feet, if it followed sewage or flood water, if it is inside the HVAC system, if it keeps returning after proper cleaning, or if anyone in the home is immunocompromised, asthmatic or elderly. Mould inside a wall cavity or air handler is not a cleaning task, and disturbing it badly makes the problem worse.

Prevention Is the Only Permanent Fix

• Keep indoor humidity between 30 and 50 percent; a cheap hygrometer tells you where you stand.
• Run bathroom exhaust fans during and for twenty minutes after every shower.
• Fix leaks immediately, including the slow ones under sinks.
• Check the AC condensate drain line each spring; a clogged line backs up into the pan and the ceiling below.
• Do not push furniture flat against exterior walls; leave an air gap.
• Dry any water intrusion within twenty-four to forty-eight hours, which is the window before growth begins.
• Clean and dry the washing machine gasket monthly.

Routine cleaning matters here more than people expect. Regular attention to bathrooms, laundry areas, window sills and under-sink cabinets is how small moisture problems get spotted while they are still small.

Rather Have Someone Else Do It?

Lemon Blossom Cleaning Services has cleaned homes across Collin County, TX since 2008. If you would rather hand this job to a background-checked, GBAC-trained team that brings its own eco-friendly supplies, take a look at our Deluxe Deep Clean service, or see everything we offer on our residential cleaning services page.

We clean homes in Wylie, Frisco and Plano, along with the rest of our Collin County service area. Call 469-617-7676 or request a free quote.