Sashco CleanSeal Kitchen & Bath Caulk Mold feeds on body oils, shower products, cooking oils and bacon grease that collect in the corners of your shower and kitchen. That is why we created CleanSeal, the first ever active enzyme caulk that eliminates mold food. By taking away the food, we literally strip mold of its power to grow. Plus, unlike mildewcides and repellents that wear out over time, our active enzymes are permanent for long-lasting results. Maintains water tight seal. Will not crack, tear, or pull away. Use on countertops, backsplashes, kitchen fixtures, bathroom fixtures, bathtubs, showers, sinks, and more. Quick water cleanup with no offensive smells. Environmentally friendly. Low VOC. Indoor use only.