Amazon notes on Prop 65:
California’s Proposition 65 entitles California consumers to special warnings for products that contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm if those products expose consumers to such chemicals above certain threshold levels. We care about our customers’ safety and hope that the information below helps with your buying decisions.
Um, I ordered a farking mouse. A plain, ordinary, seven-dollar USB mouse. What’s to warn?
WARNING: The wires of this product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
They does? Oh, horrors!