While Toby was dying, the catbox testified: his food flowed through him like sewage. Now Barnabas is the only user of the box, and his turds are tiny bullets. Barnabas lived in the wild before we took him in. Though he is fat now, his guts have kept a wild creature's efficiency: what can be used, will be used. He shits like Superman. His waste is nothing but lead and kryptonite.