To guard against rapid re-soiling and to leave carpets feeling soft to the touch as well as adding a luxurious sheen, carpets should be rinsed with a solution of Free Rinse Pro. This specialized formula can also be used to prevent browning when highly alkaline cleaning solutions have been used.  Free Rinse Pro is also highly effective as an acid spotter and to clean light colored fringes and edges on rugs or as a urine stain remover. Use this product where zero residue is desired.