Q-BAC™ is a proven "one-step" disinfectant-cleaner-sanitizer-fungicide mildew static virucide, which is effective in water up to 400ppm hardness in the presence of 5% serum contamination. Apply Q-BAC™ to walls, floors and other hard (inanimate) and non-porous surfaces such as tables, chairs, countertops, sinks, tile, fridge, porcelain or bed frames with a cloth, mop or mechanical spray device so as to thoroughly wet surfaces. For heavily soiled areas, a preliminary cleaning is required. Prepare a fresh solution daily or when used-solution becomes visibly dirty.