To identify visible mold, look for fuzzy stains that are black, green, or white in color, in enclosed spaces and rooms with a lot of moisture, such as the basement. Use sprayable mold remover to kill mold on hard surfaces, such as glass or tile. For mold on surfaces that are more difficult to clean, such as drywall, consider seeking professional help. [2] X Research source

You can get a quality air purifier at any home improvement store and at most mass retailers. Closely follow the instructions on the air purifier for effective results. Be sure to use air purifiers with HEPA (high efficiency particulate air) filters, as these capture more than 99% of particles in the air. [4] X Research source

Be sure to also keep the air conditioner’s drip pans and drain lines clean and dry so that mold does not grow in them. Pay special attention to your windows if you live in a humid area. Poorly insulated windows can pick up a great deal of condensation, which makes them very hospitable for mold, while open windows allow easy indoor access for mold spores from outside. [6] X Research source

Make sure any spills or leaks you come across are dried within 24 to 48 hours. Mold can grow quickly in spaces with even slight amounts of excess moisture. In the kitchen, mold is particularly likely to grow in refrigerator drip pans, door seals, and garbage pans. [8] X Research source Watch out for mold growth in these rooms on bedding, clothes, and old papers, as these are common places to find mold. Regularly check under sinks for leaky pipes, as these will create wet environments amenable to mold growth.

Consider using linoleum or concrete flooring in the basement, as these materials don’t hold in as much moisture as carpeting does. [9] X Research source

Be sure that water is able to flow freely through your gutters; mold in your house can easily be the result of a roof leak caused by clogged or damaged gutters. [10] X Research source Clean and inspect your gutters regularly, especially after big storms.

If you’re unsure which rooms the mold is coming from, you can also use a whole house dehumidifier linked to your central air system. [12] X Research source Set dehumidifiers to 50% humidity or lower; anything higher will encourage mold growth.

Dry bathroom floors and walls after taking a shower. Don’t leave wet clothes in the washing machine after they’ve been cleaned, and don’t leave wet items lying around the house. Keep your eye out for condensation on windows; dry them immediately and determine the cause of the condensation to prevent mold growth.

Make especially sure appliances that produce moisture, such as clothes dryers and stoves, are ventilated, and that they do not vent into your attic. [14] X Research source Clean exhaust fans once every 3 months. Opening a window when cooking or showering will also help to vent excess moisture.

For best results, hang these items to dry in areas with good air circulation, if possible. [15] X Research source