The man who refinished my oak floors said to never use any oil product on the polyurethaned floors. He sold me a product then (don't remember the name), but I have switched to Bona. It's a little pricey, but it works very well. I also use a large headed rectangular mop that has a terry cloth head. I switch out the heads if one gets to dirty, then wash them in the washer. It's a great mop. I think they sell them at Bed, Bath and Beyond.