I know lots of people mentioned scraping the deck. A few years ago I found that if I took a paint brush and painted the underside of the deck with used motor oil it made it easier to clean the deck next time around and it's a good way to repurpose a little oil (maybe 4-8 oz.) I usually scrape the deck multiple times per year and re-coat it with oil. I've never had a problem with my decks rusting out because I don't mow when the grass if wet unless absolutely necessary but for those who have rust problems this would probably also extend the life of your deck by a few years.