For anyone not aware you can buy salt tablets at most pharmacies. I always carried some when I’d go for long bike rides being I get salt depleted quickly. I’d also take salty snacks.
Those 1# to 4# boxes are so inexpensive to buy and it doesn’t go bad. It behooves us to set aside plenty in our preps. I don’t have any animals but I’ve set aside a coupe of those big salt licks you can buy at Tractor Supply type stores in case I find myself having animals post-SHTF (or for my neighbors to use with their animals when they can’t run to the store any more).