W.D.
I've had the SAME problem....dirt gets in my tile really bad....I had a sales-man come by the other day selling cleaner that is suppose to be the BEST...suppose to leave NO film behind, like Your ordinary cleaner...I thought it was a gimmick, because now-days You have to be very sceptical, but he showed me how it worked, and I tryed it....It really cleaned my tile good, and the product is used for TONS of things....suppose to replace everything in your house...The web-site to look at the product is, www.advanage.com, and they should have a number on there, if You wanted to talk to someone.....