I've just spent a 'happy' half hour, out along our verges etc, picking up fag packets, junk food cartons, beer cans, sugary drink cans, McDonalds drink cartons, other nasty fast-food packaging and a million evil-looking fag ends...
Several chums do this in other areas here, and although it's a bind, at least we can then consider that we're all not stupid morons and still have some sense of pride in our rather pleasant village.
Apols for sounding so sanctimonious, it's not a normal trait, but if all that smelly trash was collected and dumped on the idiot's own front path, they might eventually understand something...
Apart from that, I've never found any 'undercrackers'...