The creeper effect is a rare one, coming from the Austere Bee. If you are not wearing a full apiarist's suit, the queen will blow you up if you are within her territory (With no damage to the ground, apiary, or alveary). This effect can be used as a defense for your house, as long as a full apiarist's suit is worn. The creeper effect is not to be confused with the creepers (plural) effect, which comes from the Creepy Bee, a further muatation of the Austere Bee. The effect will spawn creepers within the queen's territory if the light level is low enough. This can be used as an effective gunpowder farm, in addition to the powdery comb that is produced by the Creepy Bee.