Do not attempt to use the ionvac Cordless Vacuum on any wet messes or liquid spills, as they may damage its battery or other internal circuitry. You may have trouble trying to use the vacuum on thick carpets or rugs, especially when trying to remove pet hair. Do not use the vacuum on any surface with any kind of glowing ash, cigarette butts, matchsticks, or any other fire hazard. In addition, never attempt to use the vacuum to clean up toxic substances, hard pointed objects (glass shards, nails, etc.), makeup, plaster, cement, and other substances that may clump together and block the filter, which in turn may damage the vacuum.