Clean Kirby is one of Kirby's many Copy Abilities. It has only appeared in Kirby's Dreamland 3 and the anime, Kirby: Right Back at Ya!. It was also going to appear in the cancelled Kirby game for Nintendo GameCube.
Kirby is simply holding a broom, but in the anime he is also wearing a hankercheif.
Kirby attacks by sweeping the broom at an enemy.