As monkey says, it should be easy to find something similar. Just read the labels and if it's got something nasty (useful) in it then it'll probably work.

I'm sure you could just get hydrochloric acid if you wanted, but it's not a good juice to have lying around. Paul freaked out when I turned up with it concentrated.

It's also used to clean masonry, oh and it'll clean up the aluminium smeared on siezed NSR cylinders. It'll also dissolve the rest of the cylinder if you just splash it on.