yes I have used the Rug doctor, it was very good too!........my grandson drew train tracks on a beige carpet with a black wax crayon, I thought it was hopeless!......but we tried the Rug Doctor, and to my amazement it worked! we bought the carpet cleaning solution and the deep cleaning solution too, which was quite expensive, but worth it!..
milly, have also used a carpet cleaner from our local tool hire shop, which worked out cheaper, this was also excellent!........might be worth checking this out too.....good luck with it!..........