Penetrating sealers or stain guards help prevent food, oils, chemicals, and other staining agents from penetrating the concrete, making it easier to clean and maintain a pristine appearance. Routine cleaning can often remove most spills and contaminants without the need for harsh chemicals or intensive scrubbing, thus saving time and effort in maintaining the floor. By reducing the likelihood of staining, they prolong the lifespan of the floor, reducing the need for frequent maintenance, re-polishing, or repairs.
There are some processes that can be used in conjunction with specialized treatments to help the polished concrete resist staining from food and other stains. These treatments can add as much as $2-$3 per square foot to the cost of polishing.