Why do most translators of kafka's The Metamorphous choose to use the term vermin instead of cockroach?

Most translators of Kafka's "The Metamorphosis" opt for the term "vermin" instead of "cockroach" to capture the broader, more ambiguous nature of the creature's transformation. "Vermin" encompasses a range of undesirable pests, allowing for a more universal interpretation of alienation and dehumanization that Kafka explores in the story. This choice reflects the themes of existential dread and societal rejection, which transcend the specific imagery of a cockroach and resonate more deeply with readers. Ultimately, "vermin" serves to highlight the protagonist's loss of identity and humanity rather than limiting it to a specific insect.