Was reading the ATSDR Public Health Statement for Americium. It mentioned that higher-than-normal levels of americium could be in the soil near plants that manufacture these devices. It also said that if you live near such a facility you should "discourage your children from putting their hands in their mouths and engaging in other hand-to-mouth activities." Good luck with that. That said, as these things are built, is there any possibility that trace amounts of americium could get on the outer plastic casing, in the battery slot, or on the packaging material?