Shake the dropper in or out of the bath to make the colored beads inside rattle and dance. At bath time, place the end of the dropper below the water surface and squeeze and release the bulb. Water gushes in and makes the beads rush about. Move the dropper above the water and squeeze the bulb again to create a powerful water spout. Great for playing with friends. The silicone bulb can be removed for easy cleaning.