No one has mentioned any issues with keeping it clean; users have praised the device's sleek design, appreciated the absence of wires, and remarked on the satisfying sense of holding a "space blaster" in their hands. However, prolonged cleaning (more than 15 minutes) can be painful due to the vacuum's weight, which gently rubs the callus. There aren't nearly enough softening elements in some spots (highlighted in the photo), which might not seem like a big deal overall (but for 50,000 won, I'd rather rub my corns than clean).