Black stuff from battery... :(
 

Almost about a month ago... someone smashed my windows... with a car battery that was on the floor... -_-;;
this caused these black liquid stuff to splatter all over my car...
i was able to get rid of all the black stuff on my car body and everything, but even now i cant seem to get rid of the ones on the rims.
anyone recommend any product? or what i should do?
Thanks.