Once we have finished with your tile and grout services we suggest you use a water based neutral cleaner with a mop to keep your floors clean. You want to avoid using products like vinegar or anything acidic because they will break down the sealer. We suggest you give us a call every 10-12 months depending on foot traffic for a maintenance clean. During this visit we will clean whatever areas you notice are looking dirty again and apply touchup color sealer to grout joints that need it.