Wipe up liquid spills and sweep up any dirt and debris. Then fill a bucket with hot water and a household floor cleaner. Use a damp sponge mop to clean the floor. Change out the water frequently for a thorough clean. Avoid using a lot of water, this will allow too much water to seep through the tile seams. A damp mop should result in a minimal amount of water seepage that can easily evaporate in the air flow. If there’s oil and grease, you need a specific cleaner geared for these substances.