Never wet mop your floor, and always clean up spills and standing water as soon as possible. With water or any other cleaning agent, be sure to thoroughly ring out the applicator or mop prior to applying it to the floor. A damp mop is fine as long as the moisture is limited to an amount that will evaporate almost immediately. Moisture that is allowed to seep into the seams between the planks may cause damage to your flooring. Do not allow soiled mats or rugs to stay on the floor as they can trap moisture on the surface.
Did you know your hardwood flooring is highly susceptible to moisture? That is why it is of the utmost importance to keep your home environment stable to avoid the common moisture issues such as cupping, splitting/cracking, gapping, etc. Keep your floors from becoming too dry or too wet by keeping the relative humidity within a range of 35 - 55% and maintain an interior temperature between 55°F and 75°F.
If the finish on your floor is beginning to show wear; it is probably time to have your floor refinished by a professional. There are several options available, depending upon the condition of your floor. Viking recommends consulting a hardwood flooring professional to help decide on the best course of action.