What is Proposition 65, and why do we employ this warning?

California's Proposition 65 ("Prop 65") is a consumer right-to-know law.

Prop 65 requires products sold in California to bear a warning label if: (1) the product contains a chemical(s) known to the State of California to cause cancer, birth defects or other reproductive harm; and (2) persons are knowingly or intentionally exposed to the chemical (3) above strong certain safe harbor levels when using or consuming the product.

In general, the list of chemicals that fall under Proposition 65 contain a wide range of naturally occurring and synthetic chemicals that include additives or ingredients in pesticides, common household products, food, drugs, dyes, or solvents. These chemicals may also be used in manufacturing and construction, or they may be byproducts of chemical processes, such as motor vehicle exhaust.

What should I be careful of while handling products that have a Proposition 65 warning?

Yes, absolutely. We recommend against handling food or drink, allowing contact with open cuts or broken skin during the installation and handling of Proposition 65 labeled products. We also recommend thoroughly washing your hands when the installation or handling process is complete. Products that bear the Proposition 65 warning are not to be ingested or come into contact with facial, mouth, and eye areas.