There are a few things you can do to clean grease off hardwood floors. The first is to use a cloth or paper towel to get the grease off. The second is to use a vacuum cleaner with the hose attachment to suck the grease up into the vacuum cleaner. The third is to use a bucket and pour water onto the floor and then put the bucket away. Finally, you can use a scrubber brush and scrub the floor until all of the grease is gone.