Probably built up dirt and wax. Open windows. Use one cup of ammonia to one gallon of hot water and a few squirts of Dawn dish liquid. It will remove built up dirt, grime, and wax. You may need to apply fresh wax. I do this once a month to my vinyl floor in between washings.
Here is another that works well for me. Use dishwasher soap. It has a whitening agent in it. I squirt some on rub it all over and then wipe it off. I use it for numerous things it even whitens yellowed material.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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Probably built up dirt and wax. Open windows. Use one cup of ammonia to one gallon of hot water and a few squirts of Dawn dish liquid. It will remove built up dirt, grime, and wax. You may need to apply fresh wax. I do this once a month to my vinyl floor in between washings.
Here is another that works well for me. Use dishwasher soap. It has a whitening agent in it. I squirt some on rub it all over and then wipe it off. I use it for numerous things it even whitens yellowed material.
Strip it with amonia