Absolutely not. The steam will get into the Pergo and cause de-lamination. We use a little Windex on a sponge mop. It cleans very well and dries almost instantly.
I wouldn't, steam will cause glue in pergo material to break down and warp. Best product I've used for my wood floors is Murphys Oil soap. Wring mop as dry as you can or water will settle in cracks and warp.
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