California Prop 65 WarningCalifornia proposition 65 requires businesses to provide warnings to Californians about significant exposure to chemicals that cause cancer, birth defects, or other reproductive harm. Add details about the warning you want to show California buyers. We'll add a warning symbol and the word 'warning:' before the description you enter here, and we'll add 'for more information go to www.p65warnings.ca.gov' following your description.