Trash refers to inorganic items in Viscera Cleanup Detail that must be disposed of to obtain a perfect score. Trash can be detected using the right (green) side of the Sniffer. Trash can be incinerated, destroyed with the Laser Welder, or placed in the Janitor's Trunk to remove it from a level.
Bloatenstein Beer is a brown bottle with a blue label containing the words "Bloatenstein Beer" in red letters. The label also contains the text "Aretmis 9's Finest Beer" and "Since 2076".
The bloody briefcase is a gray briefcase containing blood stains. It can be found in Revolutionary Robotics and Uprinsing. One special bloody briefcase can also be found in Shadow Warrior.
The Chinese Takeout Container is a tapered cardboard box of the sort used for takeout orders from Chinese restaurants. It is a white paper container with flaps and a Chinese logogram on it.
Chinest takeout containers will be completely destroyed by the Laser Welder.
Fatman is a grey/silver can with FATMAN written in blue and a nuclear mushroom cloud in yellow on the label. Fatman is almost certainly a brand of beer, though the label does not specify what type of beverage it is.
The Paper Cup is an empty white beverage container containing light brown stains.
Paper cups will be completely destroyed by the Laser Welder.
Shell Casings
Shell Casings are the remains of used ammunition rounds. Large amounts of shell casings usually indicate bullet holes nearby, that need to be welded before punching out of a level.
Shell casings will be completely destroyed by the Laser Welder. Since the Laser Welder tends to push them away before it vaporizes them, they may be swept or mopped into a pile against a wall before welding.
The Sniffer will detect soiled water buckets as organic trash, but clean water buckets must also be disposed of in order to perfectly clean a level.
Trivia
Despite the fact that the sniffer does not detect them as trash, all Domestabots and droids that can be picked up must be disposed of in order to clean a level completely.
The game's developers considered adding a tool to pick up multiple shell casings at once, long before players suggested the idea. The tool would have been attracted to any metal object in the level, including wall panels, even pulling the player towards them. No explanation has been given for why it was never implemented.[1]