Grinning--they generally can't get from A to B without getting wet feet here...hardest part is digging a dry spot in a good place for the salt and keeping it from pooling.
Ditto on the does and soil. I don't watch salt licks per se. The deer naturally chew the soil to get salt (here) and have had a block sit ignored while buried fine salt in the ground gets hammered. Bears can be hard on blocks, too--sometimes taking it along...
I try to fill up the salt spots post season in case we can't get in early in the spring. This year the snow left a little earlier, but came last November hard enough that we couldn't get down the trails opening week of rifle. We get action on salt licks year round.
