1. Avoid using chairs with rollers because rollers can really scratch up floors as dirt and grit tends to get caught in them.
2. Protect hardwood floors by no shoe's policy as Small rocks or other objects can get stuck in the tread of a shoe and damage flooring.
3. Small felt tabs can protect floor from scratching. With furniture tabs you can shift around your tables and chairs without worrying about the scratch.
4. Rubber chair legs can be purchased specifically for the bottoms of chair legs
5. Oils and finishes can repair small scratches on the wood. Stores sell different kinds of fix-it kits with oils that can make some scratches less visible. Please ensure that the oils and finishes are manufactured by reputed brands.