To keep laminate floors clean, you should invest in a good dust mop and a microfiber mop. Laminate floors are very durable, but they will scratch and wear if not maintained properly.
For daily cleaning you should use a broom or a dry mop to keep dirt from scratching the surface of the laminate. You have to be careful using a vacuum on laminate. The beater brush and wheels can scratch the surface.

Once a week, or when needed, you can use a laminate cleaner on the surface to keep dirt and spills from damaging the top coat. One product I like is the Bona laminate cleaner. It is a ready to use, non toxic cleaner. Just spray it on a microfiber mop and clean the surface. I would use a reusable microfiber mop that can be cleaned. If you are cleaning the surface and it starts to streak, you need to rinse the mop. Once it is rinsed, wring out the water. You can use it if it is slightly damp.
You never want to use water and a wet mop on laminate. It will swell and warp the fiberboard under the surface.