We recently completed a commercial project that required all 5 service technicians. It was quite a night! This kitchen was in dire need of grout repair; The grout was all but eaten away in multiple areas of the kitchen. In the "before" photo you can see where the grout was missing and stained. The "after" photo still shows some of our grout dust and a few areas of the grout were still drying (the darker areas), but it'd be impossible not to see the difference!