grout haze on tile

[doinit]

I just finished cleaning up sanded-grout haze off of glazed tile using vinger(5% acid) no dilution with water.
and it worked! let soak five minutes and scrub scrub scrub.
thanks to this website.

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[Steven Hauser]

You may want to wash the area with clean water a few times. If you have hard water add amonia to the water.

:)