My wood floor seemed to be developing a subtle haze shortly after it was cleaned lately. I think my spray on cleaner was creating some build up. So, there is only one thing to do...and it involves getting on your hands and knees!
Add a mixture of 9 parts white vinegar and 1 part warm water to an empty spray bottle and spray and scrub the entire floor surface with a terry cloth rag every few months or so to avoid cleaner build up.
Within minutes the vinegar smell will disappear and your floors will gleam!