On 13/07/2009 23:04 Harry Bloomfield wrote:

Get a tile grout scraping out tool, scrape it out and regrout it?

I was trying to avoid that and was hoping that someone would come up
with a magic liquid like what you see on telly: sprinkle 5 drops on a
cloth, wave the cloth in the general direction of the tiles and they
sprout little golden stars which go 'ting'!

No?

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F