Sorry guys, I should have done that to start with. It is :

1 part rock Salt
1 part di-calcium phosphate
2 parts trace mineral

These can all be purchased at your local co-op. I use a coffee can to put the mix together. I usually put about 4-5 lbs out at a time and then refresh them every couple of weeks. I was told not to mix the ingredients together until you are ready to use them, I don't know why but I don't do it. All of the ingredients come in 25lbs bags. Now is a good time to get it out there. They will really tear it up during the summer. Good Luck.

If you guys use trail cams, these licks are a great place to get a lot of pictures.

Dan