I've seen that an equal combination of vinegar and olive oil rubbed on with a clean cloth would remove white spots on furniture so that might work. I'd suggest being very careful to not leave the floor oily so people won't slip and fall.
By Marna (Guest Post)
10/02/2008
I'd contact the store you bought the floor from for their input or see if Mannington has a web site with a customer service number.
By callipepper (Guest Post)
10/01/2008
A safe thing you can try is to break a shelled raw pecan in half and rub it over the stain.