The first U.S. study (2005) to test household dust for a new and wide variety of chemicals found disturbing evidence of toxic chemicals in ordinary homes across the country. The study documents a range of hazardous chemicals found in household dust in 70 homes in seven states. All the chemicals found are toxic and harmful to the immune and reproductive systems in animal tests. The chemicals are used in mass quantities in electronic products, cosmetics, vinyl flooring, upholstery and other everyday products that many people wrongfully assume are safe. Babies and young children are particularly at risk from exposure to these chemicals.