This is a safe and harmless formaldehyde reducer. In addition to its effectiveness, it also breaks down and deodorizes other odors. Originally, this spray was designed to break down and deodorize the cause of the glue odor (formaldehyde) emitted from plywood used in old closets and furniture. In addition, it breaks down unpleasant odors from garbage, toilets, drains, pets, and protein decomposition. It's a more affordable formaldehyde reducer, and it's a product used by professionals in construction sites and rental apartments to address odor complaints. It's sourced from a wholesaler that supplies building materials, so the quality is assured. Please see the pamphlet in the image for details. In addition, it's also effective against pet odors and garbage odors, so please give it a try. We use it at home to combat the alcohol smell in the toilet. Please note that there is some yellowing and slight wrinkling on the sticker.