I do like Trophy Rock on large flat rocks in areas of high deer usage. If I place the Trophy Rock by a water source I always place it downhill from the water source, so it doesn’t leak directly into the water.
I have literally thousands of pictures of deer licking the rock. There is certainly evidence that deer will paw, or likely consume, the dirt where the Trophy Rock has leaked off the rock I have placed it on. My objective is for the deer to consume Trophy Rock to obtain a full complement of trace minerals. In addition, it is probably a bit more sanitary to place the Trophy Rock up on a non-permeable surface compared to placing it directly on the ground.
Growing Deer together,