My tile floor is WHITE, 6 years old and has ground in dirt. How do I get the tile to look clean? Do the steam cleaners do the job?

Thanks in advance

So,, the floor was yours originally ? Or is this something that you have just acquired ? If the ceramic floor is gloss then I don't see how the dirt is ground in. That's why its called ceramic. But let me explain. Do a test on just one tile with some baking soda and water and see if you can get the grime off. If it works then you will have to go over it with something mildly abrasive and soapy. And yes, the steam cleaners may work. Do the test first. Baking soda is very mild so won't scratch the ceramic surface.