Professor Littleby's Germicidal Cleaner & Deodorant Concentrate is a multi-purpose, germicidal detergent effective in the presence of a moderate amount of organic soil (5% serum). Disinfects, cleans, and deodorizes in one labor saving step. Use this product on washable, hard, nonporous surfaces of : walls, floors, counters, sink or basin (empty), metal, sealed stone, stainless steel, glazed tile or ceramic.