I put out one of the trace red mineral blocks (50#) about a month ago. I dig a hole and bury half the block with the other half sticking out. This helps the minerals leach into the soil. The deer are absolutely tearing it up right now. It's a mud hole with tracks everywhere. I got 20 different pics on it just the last week. This is usually the time they start hitting them hard. Don't waste your money on the deer cain flavored blocks.
todd