I have a Pergo floor in my kitchen and I've it for about 10 years and all I have ever used is vinegar and water. Looks as good as it did when we put it in.
P.S. After I 1st got the floor I looked at a bottle of cleaner that Pergo made and read what was in it and yes "vinegar & water" was in it
also some other chemicals that I couldn't even read.