Canary Cry Bombs are disposable, non-lethal grenades used by Black Canary to emulate her iconic ear-piercing Canary Cry when she would otherwise not have access to her power.
During a brief period when Black Canary lost her sonic scream superpowers, she had the Canary Cry Bombs made as an alternative.
When Laurel Lance took up the mantle of Black Canary after the death of her sister, she created her own sonic grenades to use as one of her signature weapons. Though she didn't have powers of her own, she would deploy her grenades in battle which would let off an ear-piercing shriek to stun her enemies.
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