Hidden Danger Houseguest Overstays Its Welcome

A faint, musty smell. Dark patches on your walls. Tiny spores floating unseen in the air.

Mold is a part of life—it’s literally everywhere.

But when it starts invading your living space, should you be concerned?

Mold can range from a harmless annoyance to a potential health risk, especially for those with allergies and asthma. And mold exposure can be significantly worse for seniors and young children with weakened or underdeveloped immune systems.

Here’s how to recognize when mold becomes a problem, how to deal with it, and tips to keep it at bay…

Mold is a type of microscopic fungus that thrives on moisture. It is found on everything from plant leaves to the grout in your shower and plays a crucial role in breaking down organic material.

But when it grows indoors, it can cause more harm than good.

Common indoor molds include Aspergillus, Penicillium, Cladosporium, and the infamous black mold Stachybotrys. These fungi release spores into the air triggering allergies and asthma and causing unpleasant odors and surface discoloration.

A little mold under the sink or in the shower is normal. But it’s time to act if you have large, dark patches spreading across your walls.

Mold growth is often a symptom of a bigger issue, like a plumbing leak or poor ventilation, and it can quickly spiral out of control without intervention.

Problematic mold growth is often signaled by patches larger than a pizza box, persistent musty odors, visible water damage, or allergy-like symptoms such as sneezing and coughing. If you notice any of these, it’s time to address the issue before it worsens.

Mold spores are always present in the air, but high indoor concentrations can pose health risks. Some molds produce mycotoxins, which can be harmful in large quantities.

Small areas of mold can usually be cleaned with soap and water or a commercial mold cleaner, but larger infestations often require professional remediation.

To keep mold at bay, address moisture issues promptly, whether it’s a leak or poor ventilation. Repair leaks, improve ventilation, and use a dehumidifier to keep indoor humidity below 50 percent.

Use protective gear, such as gloves and a mask, to avoid inhaling spores during cleanup. Non-porous surfaces can be scrubbed clean, but severely infested drywall or carpet may need to be removed and replaced.

Regular cleaning in high-moisture areas, like sinks and showers, can also prevent mold from taking hold.

Natural remedies can complement your efforts to control mold.

Vinegar, for example, is an effective antifungal that can be sprayed on surfaces to kill mold and prevent its return. Tea tree oil mixed with water offers another natural defense, while baking soda removes mold and absorbs excess moisture.

Mold in your home doesn’t have to spell disaster. When you address moisture issues quickly, clean promptly, and stay vigilant, you can protect your health and maintain a comfortable living space.

P.S. Mold isn’t the only invisible threat lurking in your home. Here’s how to make your surfaces virus-free.

Sources:

A Brief Guide to Mold, Moisture and Your Home, epa. gov