That rudeness to others be included within the rule about abuse.
I am appalled that you found the time to be rude to a new member making their first post. Having looked closer at the thread though it seems you can't help but be rude to others.
So may I also suggest that if you can't be...
Hiya
Try these people. I have a similar problem and when I phoned them they were really helpful!
This is the link to their tile cleaning product
http://www.originalfeatures.co.uk/tile_purchasing_info.htm#cleaningpack
If you do use them can you let me know how you got on
Thanks