When asbestos particles get into the air, they can be breathed in and can lead to lung cancer and mesothelioma.

The school year is quickly approaching for many students around the country meaning school supplies could be flying off the shelves.

Regarding school supplies, the U.S. Public Interest Research Group has released a report saying crayons, specifically Dollar Tree brand crayons have tested positive for asbestos.

When asbestos particles get into the air, they can be breathed in and can lead to lung cancer and mesothelioma, according to the Centers for Disease Control.

"Some of these school products contain toxic chemicals that, while not banned by the federal government, could possibly pose a risk to children. It is legal to have asbestos in crayons. However, scientists and government agencies point out that it is unnecessary to expose children to asbestos," US PIRG said in a statement.

For a full list of safe school supplies you can go online to the US PIRG safer School Supplies: Shopping Guide.