Natural amp clean foaming carpet cleaner is a unique low foam cleaner formulated to tackle all types of spots and spills independently approved the natural amp clean foaming carpet cleaner has passed the rigorous independent tests of the wool board and carries the suitable for use on wool endorsement safe to use natural amp clean foaming carpet cleaner is ph neutral natural and biodegradable making it safe to use on all types of carpets or upholstery excluding cotton velvet or tho