What is the purpose of the robot mice in there will come soft rains?

In Ray Bradbury's "There Will Come Soft Rains," the robot mice serve as a symbol of automation and the remnants of human technology in a post-apocalyptic world. Their primary purpose is to maintain the home by cleaning and performing household tasks, reflecting the story's theme of the emptiness of human achievements in the absence of humans. They emphasize the contrast between the advanced technology that once served people and the desolation that remains after humanity's destruction.