... inch diameter smoke filled clay or cardboard balls.a cloud of colored. Colored Smoke Bomb Balls (12 Per Pack, 6 Packs) ... can be seen clearly in daylight or at night. Smoke balls are legal in most states, and a safe alternative to ... missiles, Rockets, Artillery shells, Consumer cakes, Fountains, Roman candels, Novelties, Ice and stage fireworks, Smokes, Confettis, Assortment pack, Display shells, etc.