Iron is a chemical element that is commonly found in multiple sources around the house, garden, and yard. Sources of iron include fertilizers, multivitamins (particularly prenatal vitamins), dietary mineral supplements, some types of hand warmers (including foot warmers, body warmers, etc.), and oxygen absorbers (small sachets found in food items like beef jerky, rawhide bags, …continue reading

Source: Hand Warmers | Pet Poison Helpline