If your basement smells musty, then that means you probably have some type of fungal growth. Fungi, like mold and mildew, love to grow where it is dark, damp and undisturbed (and usually warm). Below 50 degrees, most mold and mildew go dormant. The same is true if the moisture it feeds on is taken away. However, given the right conditions, mold and mildew can proliferate quickly. The odor you detect is a byproduct of thriving colonies.
Be warned that not all molds give off a musty odor, so your best bet is to visually check your basement, particularly after hard rains, leaks or sewer problems.
If you detect signs of mold or mildew, you should immediately treat the surface with Mold Off®. Unlike detergents or bleach, MoldOff destroys mold and mildew at the roots, not just on the surface. It contains no chlorine bleach and is environmentally friendly and biodegradable so it is safe for the environment, and especially safe for use around children and pets. MoldOff is easy to use …in most instances, you just spray it on the affected area, then wipe it down the next day. With little or no scrubbing necessary, there’s no hard work, just peace of mind.