Well most Pre-mixed Minerals You buy have mostly Salt in them any ways,read the Content Labels on any You consider and the largest amount of a Ingredient is listed 1st then each amount of other ingredient listed in order of amount.Most People don't use minerals or think they help but I think anything to improve the growth and health of the Deer Herd is a very good idea.I have pics of Deer using my Salt Block pretty well year round so adding mineral to the ground around it is a good idea and You can mix a Your own Minerals to make a mineral site and refresh it thru the year a lot cheaper!
If Your allowed to put out Corn the time release Feeders are a good idea if a Food Plot can't be done because of the Cattle?If Your going to Bow Hunt there You'll be able to pattern the Deer better and when it gets closer to the Rut I'm sure You'll see more Day Time movement!