Title: Did a good job
Product review: I bought both the acid and alkaline cleaners from StoneTech to clean the 5 year old unsealed grout on my kitchen floor. The alkaline did OK (mixed at the highest concentation), but the acid did a better job. I am not a pro, but from what I have read, it is the type of dirt or stain that determines if the acid or the alkaline will do better. I wasn't sure, so I got a small amount of each. Acid won (and restored the grout to what it looks like in areas that have seen no foot traffic).
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