Difethialone is an

anticoagulant An anticoagulant, commonly known as a blood thinner, is a chemical substance that prevents or reduces the coagulation of blood, prolonging the clotting time. Some occur naturally in blood-eating animals, such as leeches and mosquitoes, which ...

used as a

rodenticide Rodenticides are chemicals made and sold for the purpose of killing rodents. While commonly referred to as "rat poison", rodenticides are also used to kill mice, woodchucks, chipmunks, porcupines, nutria, beavers, and voles. Some rodenticides ...

. It is considered a second generation agent. In May 2008, the EPA added restrictions on the sale of difethialone in consumer-use rodenticide products and also for exterior use by commercial applicators.

References

Rodenticides 4-Bromophenyl compounds Thiochromanes Tetralins Biphenyls Anticoagulant rodenticides {{Ether-stub