Bathrooms, laundry rooms and kitchens are high humidity zones in your home. The level of moisture and warm environment are ideal for the colonization of bacteria and other pathogens and the spread of mold and mildew. Tiles, counters and other surfaces are the places where you would expect to see residues of dirt and mold. Surfaces in these zones should be kept clean by home owners, but occasional professional tile cleaning would ensure a healthier environment for your family.