My runtime is bloated with old and unused clothing and props. Deleting said items is easy enough, but their OBJ files and textures remain.

Is there an easy way to get rid of these associated files other than wading through hundreds of them and trying to remember which ones are orphans? (It doesn't help that some vendors name them illogically.) Is there a utility that reads the OBJ and JPG links in a figure or prop file and deletes them along with the figure or prop?

(I use a Mac, so Windows-only utilities are welcome for the enlightenment of the PC crowd, but won't help me and my fellow Mac-heads.)