how do i clean 150 year old mosaic tiled floor?

we have an old house in scotland with a beautiful old floor but years of feet have ingrained dirt. i bought tile cleaners and polishers and it looks lovely but i know i could still get the colours more like new.

Answers:
Muratic acid very cheap and will clean anything off the tile and grout. Maqke sure to have gloves and glasses on .

Other answers:
Try some type of achohol wipe and when as clean as you want reseal the tiles to protect for more years.
Try some type of achohol wipe and when as clean as you want reseal the tiles to protect for more years.
with great care
soda chrystals n elbow grease,or rotating head attatchment for jetwash would be exellent
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