I have old and very "used" limoleum in my kitchen..in a light tan..I have tried bleach, swiffer cleaner..and just about everything I could think of..then a friend said ammonia..the lemon sented kind..and I spray it on the floor, let it stand about five minutes and then mop...beautiful...the scratches of course are still there, but the grime and stains are gone..with the lemon scent it is very nice..give it a try..it worked on my tired floors.