Makes sense but it's also common where I'm at to put out salt for legal hunting purposes. I'd say mainly as an attractant for your nearby game-camera so you can assess the animals that frequent the area. A block works, or just bags of water-softener salt.
Like @PNWexplorersaid, once it's gone they will lick at the ground for years afterwards.
It’s fair to suspect once again “faces” are safe from being “melted”. Nothing “ face melting” about any revelation other than an initial hype.
I’ll consider whatever is put forward but continue to suspect this is 1) no big deal if legit and 2) probably not legit