Not trying to tell any one what to do, but here is something I think works as good if not better than deer cocain.

1 50lb bag of di-calcium phosphate
1 50lb bag of plain stock salt
2 50lb bags of red unmedicated trace mineral salt.

This is a mineral mixture that is recomended by the Missouri Department of Conservation and cost about $23.00 to make 200 LBS and can all be bought at the local MFA or co-op.
Dig a 2 to 3 foot deep hole 4 or 5 foot around and mix the mineral with the dirt and the deer will tear it up. Plus you will be giving it all the minerals they need.