Contaminated soil can enter the body if it is swallowed or breathed in. Soil generates small dust particles that can settle on clothing, on toys, and in the home. It can enter the home on the soles of shoes and other items such as bike tires.
Children may swallow the dust when they put their hands and toys in their mouths. Young children (under the age of 6) are at the greatest risk of exposure to the lead and arsenic dust because they play in soil and put soil-covered toys and hands in their mouths. In fact, children get about twice as much soil in their bodies from their activities as do adults.