You're welcome Paul. I also used it on the vinyl at my front door....it had black marks on it where it meets the carpet and it took them off too. I had never used the Armstrong cleaner in the past because it cost more than other cleans, but I found a $2 off coupon and decided to try it....glad I did. I'll never use anything else on my floors again. The APC helped to get the vinyl back to like new again.