If you bought a knife in the past, you probably noticed the inclusion of a sticker or piece of paper that says something along the lines of “WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.”
Don’t be alarmed. You’re not going to get cancer or cause birth defects if you use and carry the knife regularly.
This warning, which can be found on knives from companies like Buck and Schrade, is the result of California’s Proposition 65. Way back in 1986, California voters passed an initiative aimed at reducing the presence of cancer-causing chemicals in drinking water. For the most part, the proposition was successful, but there were some downsides.
Part of Prop 65 prohibits businesses from knowingly exposing individuals to select substances without providing a clear and reasonable warning. That’s fine in theory—who wouldn’t want to know if there are cancer-causing chemicals in things. The only problem is that the substances on the list are pretty much present in everything.