The Rally 1200 cleans tile and grout lines using a high-pressure stream of water. It’s a contained pressure washer system that washes the surface while vacuuming up the spent solution, water, and soil. Pre-spray the floor with either an alkaline or acidic tile and grout solution, allow the chemical some time to work and then use the Rally 1200 restore the tile and grout. The Rally 1200 works with any tile and grout cleaning chemical, so you can use whatever brand you prefer. Just be sure to follow the chemical manufacturer’s recommendations for safety precautions, floor type, dilution ratios and dwell time. Once the chemical is done working, clean the area with the Rally 1200 at a moderate pace.