Works as advertised!

It has a decent interface, lots of configurability, and seems to do exactly what it promises!
Upon ejecting a disk using the app, and inserting it into a Windows PC, the disk was free of Trash, Spotlight, and DS_Store files.

Would be nice if it also cleaned Windows’ “System Volume Information”, and Android’s “LOST.DIR", and other junk which isn’t really necessary to have on a removable USB disk.

t3rminus about USBclean, v1.2