No water flush system is going to eliminate getting under the deck and give it a good scraping. What the flush system will do is change how often you need to do a full scraping. Toro has used them for a few years now and I find that the people who use them after each mowing have a much cleaner unit when it comes in for yearly service. If you want to add one to a unit, you can purchase the parts through a Toro dealer.