Add dicalcium phosphate too. You can buy it at any co-op. It provides minerals deer need. The type soil you use is important too. No sandy spots. Soil containing some clay or red dirt is best. The salt leeches into the ground. As long as I've hunted I've never seen deer use a lick. Even though they are dug out huge. I'd spend my time hunting acorn trees rather than licks.
If you want a stump removed, place a salt block on top of it after the season. they will dig one up in a year or two.