Never steel wool, instead use fine brass wool it cost more but won't scratch the chrome. I use OA when I have a lot of stuff to do but the results have been mixed as of late, so if I can I use Navel Jelly to remove rust, it is a little more work and can make a mess but the results have always been good. I use a plastic storage container to work in and I use a old paint brush to apply it, you need to be careful of painted surfaces as it will remove paint. As with anything like this you need to wear rubber gloves and eye protection to be safe it will burn your skin if you get it on you but it can be washed off with water( I keep a damp clean rag when I am working with it with a T shirt on to wipe my arms if it splashes on me).