A week ago my cat had horrific fleas and worms in his stool. I had tried many things and finally resorted to frontline and a deworming pill. My poor kitty went from active and cuddly to dead tired, dull eyed, and too weak to purr. I was so worried when he still wasn't better three days later, and finally I thought to give him some clay to suck out the poison. I suspect the deworming pills and frontline were just too much for him. That night he started purring again, and by the next morning he was back to his old self! I suspect lead poisoning in the deworming pills. I had also been spraying him with garlic for his fleas, which is very poisonous I found out now. He's better now anyway. I used green clay powder and mixed it in with some seaweed water and tuna so he'd eat it and get lots of water. Make sure he drinks lots of water after eating clay the next day! I know it'll help your animals, too!