I might suggest packing soil around the horn with in the clay tile, and if you think the bricks might get scooted around, you could tie some nylon screen over each end, as is sometimes done with stinging nettle.
I know Hugh C. doesn't seal the manure horns with bentonite (I believe he does seal the silica horns up), neither do I or, neither does Jeff. I got my first stag bladder of the year yesterday. My neighbor Ron rode over on his four wheeler, pistol at his side, rifle in the holder, and a big buck tied to the front , he zoomed up and dangled a little bladder in front of me. So I am slowly gettting these guys trained. I am so happy your a re burrying a horn Merla!! Christy >
