I love cats. Cats will do this as a way to communicate their stress to their human, that their bathroom is dirty. If you can get into the habit of sifting his litterbox every 2-3 days he'll stop making that mess. Cats act out their stress and will often pant and refuse to eat if they are stressed. I noticed in your other pet thread that your cat's not eating. He's stressed about his environment. That, or he doesn't like his food or something's going on internally. A vet visit will help you. But keep Albert's litterbox clean or this behavior of him telling you to clean it will continue. I've owned a lot of cats and whenever I get lazy and leave poop in the litterbox, that annoys the cat so they will pee and poop and make a huge mess on the floor around the litterbox.

I would change your cat's food and take him to the vet for a good checkup.He's stressed. So he's acting out b/c he can't tell you he is stressed.