This stuff is like magic on rust. Almost odorless thin liquid and it's environmentally safe—but I still wear thin rubber gloves and splash goggles when using it. I picked up a hand full of rusted tools at a yard sale for a buck or less each a while back soaked them overnight and they came out looking like new, I just rinsed them no wire brushing of buffing needed. Harbor Freight sells it. Great stuff for old tool rescue!