I have been using the "Lucky Buck" minerals and they have a lot more minerals in theirs than most on the market,the Trophy Rock seems to work pretty good too or just a plain old 50lb white salt block.Another thing we tried just this weekend is an Arm & Hammer salt lick,You dig up the ground in about a 4 foot by 4 foot square and break it up finely and take a 3 lb 7 oz. box of Arm & Hammer Super Washing Soda and spread about 1/2 of it onto the dirt and mix in,then spread about 20lbs of Salt or more on top and dump the rest of the A&H on top and after a good rain it will soak into the ground and the Deer will start hitting it.We put some corn or Rice bran on top of the Lick to get the Deer to find the food then they find and use the salt lick there.You can refresh it with more Arm & Hammer and more salt as needed.Rock Salt or water softener salt will work fine too.

Hopefully I will get a chance to set a trail camera up over the A&H salt lick and see what kind of action it gets?