The key component of a traditional mousetrap is the spring mechanism. Mousetraps typically consist of a wooden or plastic base, a spring-loaded bar, a bait holder, and a trigger. When the bait is disturbed, the trigger releases the spring, causing the bar to snap down quickly to capture the mouse. This design is not only effective but also allows for quick trapping without the need for poisonous materials. Traditional mousetraps have been used for decades, showing their simplicity and efficiency in pest control. Despite various modern alternatives, the classic design remains popular among homeowners.