We had our tile and grout cleaned again by Michael...Same results as last time, AWSOME! We have brown porcelain tile and grout that just gets filthy fast, we tried wearing socks on our feet...It still doesn't work! Once a year grout cleaning seems like a great idea! He always gives us great advice and tips, as well as having a great attitude! Thank you Michael! We will be calling you back, and refer you to others!