So I got a TARDIS mug from Underground Toys, and on the packaging says 'WARNING: The materials used as colored decorations on the exterior of this product contain lead chemical known to the State of California to cause birth defects or other reproductive harm'...NOW I contacted Underground Toys and they replied 'the lead content is <0.05 ppm based on a 550ml leaching volume'...What does this mean!!! Am I putting my uterus at risk!?!?!?