Cleaning Polyurethane Finished Floors?

Has anyone had much success with cleaning a polyurethane floor? I have used Murphy's, Bona, water, vinegar, soap and water and others and without success.

I am now wanting to try Restorz-it. Has anyone used this product? What is your note to those wanting to try the product? What do you suggest I use to not only clean, but leave a shine on a polyurethane floor?

Thanks.

By Frust8dclnr from NC