Question: is formaldehyde in rat poison?
Answer: Tetramethylenedisulfotetramine (TETS) is an organic compound that is used as a rodenticide (rat poison). ... TETS is a sulfamide derivative. It can be synthesized by reacting sulfamide with formaldehyde under acidic condition. When crystallized from acetone, it forms cubic crystals with a melting point of 255–260 °C.