All horses LOVE this even if it is only filled with hay cubes. Horses are intrigued by this. I have never watched a horse NOT be able to get it. It stimulates their brain and rewards them. Also perfect for laid up horses to decrease boredom. When my horse is laid up, he is placed in THE INFIMARY outside near his herd. It is a 15x15 space that is a triple row boarded space. The lower row of boards does not allow the Amazing Graze to escape. He is so much happier out there near his heard during "stall confinement".The Amazing Graze is his buddy.