If your floor is still looking in reasonable condition with no scratches, good coat of lacquer and no bare patches, it probably just needs a good clean and some lacquer refresher.
Firstly, hoover the floor to remove any grit. Then use a dry mop or dust mop to pick up any dust that may have settled, allow some time between hoovering and dry mopping to allow the dust to settle back onto the floor. Use a dust mop with electrostatic properties to more easily draw the dust towards it. After dusting use a specialist hardwood floor cleaner such as our E-Zee Clean or Bona's Hardwood Floor Cleaner, both of these are "spray and wipe away" cleaners using no water what-so-ever. Never use water on a hardwood floor as this removes the lacquer over time leading to having to get the floor sanded and resealed. For an extra layer of protection we suggest using a lacquer refresher or polish. A lacquer refresher has a small amount of lacquer that coats the floor giving it a renewed finish and a level of protection. The polish works in a similar way but has to be applied with more care as it can pool and leave marks on the floor. A polish also has to be removed, with polish remover, prior to sanding works being carried out.
We have recently been trying out the Bona cleaning system on our floors in the showroom using the new Bona Spray Mop. Which is a dry mop with built in spray bottle making it easy to clean the floor using one hand. The mop is currently on offer at £25.00 including VAT with spare and different heads and spare cartridges also available. It really does make cleaning our floors quick and easy.