Spin Master maintains rigorous quality control in its production, carefully controlling both the physical size and chemical makeup of Orbeez. Orbeez have undergone extensive testing and risk analysis by independent, third-party laboratories. All genuine Orbeez are non-toxic, do not clump and are expected to breakdown in gastro fluid. As with any foreign object, however, if a substantial number of Orbeez are swallowed, we advise consumers to seek immediate medical attention for the advice of a medical professional. The recommended age for Orbeez is for children ages 5+. Caregivers should carefully supervise children using Orbeez and should always store Orbeez away from small children.