I have a 20x20 garage that has recently been cleaned and organized. The house is 10yrs old and the floor seems to be in pretty good shape, ie, no major oil spills or stains. I am looking to treat the floor to give it a clean and easier to maintain appeareance. I looked at a product in home improvement store Rust olem floor exopy. I can cover my floor for about 100.00. Will this product work or do you recommend a different product? By the way... how clean is clean for preping the floor.