WOW!!!!!! I am shocked. I generally am not a fan of interlinks tile cleaning chems. I really cant stand Viper Venom because at 2 RTU gallons per 1 Gallon of over priced chem it dosnt work as well as other less expensive chemicals. But some how a inexpensive GREEN cleaner that the produce makes 5 gallons RTU per gallon and ......... WORKS!!!!!!! I borrowed some from a friend when I ran out of 2790 because I had a job the next morning and didnt relize I was out of 2790 and that was all he had. WOW!!!!!!! It worked **** good. PH of 7.0 - 7.5 and WORKS!!!!!! On a side by side test with 2790 it worked equally well. And seeing as I am a shill for 2790 this says alot. Granted I can get 15 - 20 RTU gallons out of 1 gallon of 2790 I have still not found any other tile cleaner that cleans as well till now. I have also been using the Green Balance on travertine with no adverse effects. (Always test first, every single time!!!!!!) So this is now my go to travertine cleaner and my back up tile cleaner if I run out of 2790 and Ken is on vacation or something weird happens where I cannot get any. By the way did I mention this stuff WORKS???????? Oh and PS it is supposed to be a "green" cleaner also. I dont know what that really means, but it does work and it has a mild PH level.