Agree with "Patchholder". You can get about 100# of a good mix for what a single "Rock" usually costs. Try this mix. It is more or less what I got from info from Auburn Univ. many years ago. Also similar to info from Pen. St. and LSU. While salt blocks work well, seems to me the deer hit the granulated stuff earlier on and heavier. I have done this for decades. I have never once seen deer on the lick, but every one I have made has been bombed. In one particular case, the deer have dug a 5' x 5' x 5' "cave" into the hillside where I started a lick on a stump way back about 1980.

Granulated "White Salt" - This can be bought in 50# bags. It is chemically equivalent to "table salt" .... NaCl. Probably about $6.00/bag. you can also use "Red Salt". Also known as trace mineral salt. This product is essentially "table salt" with some other minerals. It is probably about $7.50/50#. Neither of these do the deer much good. but will attract them to the lick. If all you want to do is attract, this will do it.

Dicalcium Phosphate - This is a "greyish" powdered mineral whose effect is to build stronger frames, probably antler mass and is supposed to help does with mineral depletion during lactating. This product is probably about $20/50#.

"Dairy Cattle Supplement" - This product is known by several "names'. Down this way it is not as easy to find. It is a mineral supplement used for dairy cattle. It is mostly a calcium based supplement. This too helps build strong bones and probably helps with antler mass. This product is probably $15/50#.

The reason I am not certain of the cost is that it rose so much from '07 to '08, that i am guessing. I am putting out mine this weekend and will know for sure after I buy.

While there is probably no perfect "mix" ratio of these, I have used (as a rule of thumb), 2 parts salt -1 part dical-1part dairy. It works great poured over a stump or in a "trough". I use a 50 gallon plastic barrel, cut to make 2 troughs. I usually put about 50# in each "lick" abut now. Then around June-July, refresh with another 25# - 50# or so.

You do need to verify local game laws to make sure this is legal.