I have a steam cleaner and it does a wonderful job on that film but, it doesn't immediately get the film up. Mine takes several times with the steam to finally lift the film. Mine is a shark steam cleaner. For the grout, about once a year I use scrubbing bubbles and a toothbrush. I work in small sections and don't try to get it all done at once. When we moved into our house I had my husband convinced that the grout was brown. A few days later he mentioned, Why is it gray next to the wall? Oops.