We have worked with the Cheetah pucks in a number of different situations. Did a complete terrazzo floor in a school from 1-4 and it came out very well and saved some time. Did a test on a granite floor and it also came out well. Also some commercial marble bathrooms using 2& 3. Just started a few months ago and don't have a ton of experience. The downside is that it is a fussy process requiring using a dual pump extractor and the timing has to be more precise. Definitely not a one man job.
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From the desk of
Baird Standish
Managing Partner
Facility Specialists, LLC
15 West Highland Ave. Suite E
Philadelphia, PA 19118
Phone: 215-732-7505
Fax: 215-546-9160