I had new Dupont Zodiaq countertops installed in my kitchen this past week. Today I am trying to clean it for the first time to remove the fingerprints and misc residues from installation and handling but most won't clean off. I am using the recommended methods which are to start with mild soap and water, then use a general purpose cleaner for more stubborn marks. I have greasy, hazy hand and finger marks all over it and they just are not cleaning up. It almost seems like there is a haze or residue on it from manufacturing/installation that perhaps my contractor did not clean off with something specific? Anybody know if they come with something on them that requires a special one time cleaning?