It's not very much grease...they don't cook much greasy food at all, and their kitchen floors are constantly cleaned throughout the day.
We use Flex with citrus which is a high PH and rinse with
Matrix All Fiber which is a low Ph to balance. This is what we use in all of our restaurants and it does a great job. It is only since they got this new carpet that we have had any issues with it.
It really is wear from what I can tell. I am cleaning one next Monday and I will take some close up pics of the trouble areas so you can see what I mean.
I just got a pail of ZipAway that I am going try, so we will see how that goes. Do you have a recommendation as to what would be a better rinse?