I have a problem with a 9/16 wrench.  It was on the bench this morning.  Beside a 1/2 wrench.  It seems to have gone missing, many times, only to return but today it seems to have gone missing permanently.  It looks chrome like and has some welding burns on it and some hammer dents in it and some grease and I think it might have got some cat poop on it.  My question is, well, where is it?

Any advice in locating this would be greatly appreciated.  Thanks.

The vise grips are getting fed up as they need to go chew and round the hell off of other things.