Everyday cleaning and maintenance of installed laminate flooring is best achieved with a soft broom; hard or stiff brooms can easily scratch the surface of the floor; a soft plastic broom or a string mop is ideal for removing general dirt and debris. Swiffer-type mops that use a soft cloth to dust the floor are also soft enough to prevent any accidental damage to the laminate floor surface.
Liquid spills are one of the greatest dangers and they must be mopped up thoroughly and as quickly as possible. Laminate floors are not absolutely water tight and if liquid is left to sit on the surface it will gradually seep into the cracks between laminate strips. Just like wooden floors, the laminate will swell and warp if it gets damp.
A common serious problem are sharp edges, especially to heavy objects; consider covering the feet of tables and chairs with self stick felt pads to prevent the laminate floor surface getting scraped and marked.