My kitchen and bathroom counters are covered with beautiful 4" ceramic tiles
and 1/2 " grout lines. They have lasted for 30 years without a chip or
blemish.

The problem is with the grout. Originally it was probably sealed. Over many
years, the sealer has deteriorated. It is kind of scaling off and does not
look so good any more.

So, I would like to remove all remnants of the original sealer, then scrub
the grout free of accumulated grime and then apply a new sealer.


I can remove the old sealer pretty well with a brass bush, which does not
scratch the tiles. However, it is hard work and I am tired of it.

Is there a mechanical scrubber that will take the hard work out of
refurbishing my grout?

What do the pros use? I am sure they do not do it with a small brass
toothbrush.

Thanks



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