Yeh there's load's of Home-stuff tricks like Vinegar etc but the Max 10 is really potent.You can even use old Brake fluid.
Also if ever you run out or need some metal polish Toothpaste is a ,"Fine" polishing compound and Minty
Also a 50/50 mix of Acetone and Brake fluid is one of the best Rust release agents going.Used it for years