As someone frequently annoyed by those stupid bird/deer/insect ultrasound emitters I hope this doesn't become common, with my luck I'll be able to hear them.
My dog has no problem shitting on their lawns, and even sometimes pees on the devices.
So I'd like to find any actual devices which work on dogs (well I have no use for it but just to be sure they actually exist), because circa the original iphone I remember that there were apps which could reliably make its microphones do it (and impact dogs as expected).
Give him a treat from me, that made me smile. (I also hate those devices)
The Home Depot here uses one in the garden area and I can't shop there for more than a couple minutes. our wal-mart used to have one in the produce section, fortunately finally removed.
Worst superpower ever.