Yes, ranchers around here have salt blocks all over the place on the crown land they have the cattle on in the summer.
I have seen some deer tracks around them, but not really that many.
I thought the original post was about the natural mineral licks the wild animals find by themselves. These are often extensively used by wild animals. At one time the whole of BC was photographed from the air, from about 30,000 feet and prints of about 9 inches square, were available to the public. I have seen at least one, mineral lick used by moose, that was plainly visible on one of these printed photographs. It looked like a wheel, with spokes running out from it, but the 'spokes' were pathes the moose had made in coming and going from the lick. I have been to these well used ones and the moose pathes can easily be ten inches deep, in the clay leading to the lick.
I have tasted quite a few of these licks and none of them tasted like salt. That is why I refer to them as mineral licks. I spoke to a biologist about this and he confirmed they are minerals other than salt. He said animals know which minerals they are short of, at various seasons of the year, and these are the minerals in the licks they go to. This explains why the animals go to a lick at certain times of the year.
On a late August goat hunt, two of us watched from our little camp at timberline, and counted 31 mountain goats all at a mineral lick at the same time one evening, about a mile from us.