Masterchem Industries. Block stains and seal walls without introducing harsh fumes by using Kilz Clean Start primer. The zero-VOC interior/exterior primer is water-based and has a low-odor formula to address indoor air-quality concerns. Suitable for use on wood, drywall, plaster, paneling, masonry, brick, painted metal, and prepared glossy surfaces, Kilz Clean Start offers a mildew-resistant finish, helps strengthen topcoat appearance, and cleans up with soap and water. 866.774.6371.