It's bound to happen every now and again: A bit of rust forms on your gardening tools or takes over on your favorite baking sheet. Or you find a gorgeous bar cart at the flea market, but it has rust ...
Soak your grates in a mixture of warm water and vinegar. Let the grates sit in the solution for at least twenty minutes.
There are lots of ways to remove rust from metal. All of them have their trade offs: wire wheels can’t get in tight places, electrolysis produces explosive hydrogen, etc.
This household ingredient can work wonders in the garden.