I don't use my extractor as much these days. One method I like for
interior floors is Oxyklenz  both dissolved in warm water, machine area,
then sprinkle dry  Oxy and  brush some more, kinda acts like an abrasive
for a few minutes.

On 4/21/2018 10:48 AM, Mike Marsoun wrote:
> I'd like to know what everyone's favorite method is for cleaning grout on marble and travertine in the most simple way using floor machine OR pressure washing extractor rather than both and chemicals that you have had the most success with.  Thanks.
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