Bomb-Down is a recurring item appearing in most Bomberman games. If grabbed, the player will lose one bomb in their bomb capacity.
It is a general idea to avoid grabbing this item, unless you do not need any Bomb-Up power-ups.The only time using this item would be beneficial to the player is if they preferred a smaller number of bombs in their capacity. This item can be used to benefit the player by forcing it onto another player. For example, by using the Power Glove item you can throw this item onto an opponent and decrease their number of bombs.