There are several reasons you may want to absorb excess moisture. For example, excess moisture can cause damp spots on ceiling and walls, peeling or blistering of paint, musty odors and mold or mildew growth. Moreover, mold and mildew growth can cause health problems, including skin irritation and shortness of breath. Fortunately, there are things you can do to absorb excess moisture.
Run a dehumidifier. Dehumidifiers absorb moisture from the air by condensing water onto a cold surface (usually cold metal coils). Many dehumidifiers include a hygrometer which will tell you the relative humidity (RH) in your home. You can also purchase a hygrometer at most hardware stores.
Hang packages of chemicals that absorb moisture. Moisture-absorbing chemicals include silica gel, activated alumina, anhydrous calcium sulfate and molecular sieves. These chemicals can be difficult to find. Your best bet is to find an industrial chemical supplier or contact your local high school or college science department.
Sprinkle baking soda on the area that is covered with moisture. Baking soda will absorb the moisture. This method is commonly used to absorb moisture from carpets and rugs. Once the baking soda has sat for several hours, simply vacuum it up.
Run a sponge or squeegee over the excess moisture. Paper towels are another option for obvious moisture buildup.