We do apologize about that. We aim to sell only high quality smoke effect products, however they are made in China by humans so there is room for error. If you received a smoke bomb that did not go off or function as intended, please take a close up picture of the product and email us at smokeinvasion@gmail.com and include your name (order number if possible) and what happened. Please include a picture and as many details as possible. we will make it right by either issuing a full or partial refund or by replacing the items.