I started using Big & J's granular around middle of summer after the deer stopped hitting the other mineral. It worked pretty good and seemed to draw in more bucks than does as I started getting pictures of bucks rather than the does I had been getting. I think the block is simply the granular in block form. After a rain and a couple days of sunshine I walked up to check my camera one evening. About 60 yards from the site my brother-in-law commented that it smelled like a hog farm!! We had no clue what it was until we got to the site to check our camera. The Big & J's had molded and fermented after getting wet. I had to dig up everything I had put down!! 30 bucks down the drain. The block might show different results but I won't be wasting more money on the stuff. It works as long as it stays dry.