When a spill occurs onto your grout the porous surface absorbs the spill. Even with the best cleaners and elbow grease, some of that liquid will remain in the pores of the grout. Over time this causes staining and damage, that will cause your grout to flake out over time. Grout sealing is important in protecting your grout from these permanant damages. There are generally two types of grout sealers and those are topical and penetrating. Duraclean of Myrtle Beach uses only one kind of sealer and that's our top grade penetrating sealers. It will not leave any sticky residue, but only a clean and natural finish that dries quickly.