Sometimes things occur that cause a mattress to become wet. Leaving a wet spot is uncomfortable at best and invites mildew at worst. Smaller spills can be taken care of with the combination of paper or cloth towels and a small fan pointed at the spot until dry. Larger wet spots can be dried by first using the towel as in the smaller spills. Follow this up with baking soda for extra absorbency and a few passes of the vacuum cleaner to complete the drying.