I threw out two of the Boss Block Acorn Mineral Attractants about six feet from my deer feeder where I already had a camera set up. Over the course of three days, I ended up with roughly 4,000 pictures. I had photos of deer, squirrel, raccoons, and opossums, but I didn't have a single picture of anything actually eating or licking the blocks. Everything liked how they smelled, but I'm pretty sure the only reason the blocks are gone is because the rain dissolved them over time.