I'm desperate, my cats 1.5yo girls, keep using the neighbours gravel driveways as a giant litter tray. I do my best to check for them and clean it up, I've bought and offered gadgets to try and deter them but they're still at it. One neighbour is much more tolerant than the other but I'm at a loss now as to what I can do to help the situation any more.
I let them use my bin to dispose, I check for myself and clear up when I see anything, I've bought gadgets and offered others (that have been refused).
Short of giving up the cats or falling out with the neighbours I don't know what else I can do. I'm hoping the good people of MN can shed some pearls of wisdom.