The most important thing to do about scratches is to find out what caused them. Find the cause and remedy the problem to prevent further scratches appearing. Scuffing or high traffic areas mean gritty shoes or dirty floors. A rug may be needed in these areas. Lightly scratched areas which have not worn through to the raw wood can be lightly buffed. This will shine the area and match the sheen of the rest of the floor, making the scratch less obvious. Several manufactures offer their floor finish in an aerosol can. This can be used if the finish is wearing thin. Read the directions thoroughly before use. A deep scratch or gouge often can not be repaired easily. Usually the only solution is to fill the scratch and wait to fix when other work is done on the floor. Newly repaired wood often shows more because it does not match the colour of the existing older floor colour. Consult a professional when the damage exposes bare wood.