If you’re shipping products subject to Proposition 65 rules to addresses in California you’ll need to display text accordingly upon checkout. Surprisingly as of February 2021 we could find no working code or plugin that correctly displayed a message for an individual state.

We created the below code to display a WooCommerce warning message when shipping to CA addresses. The code will check for the “Ship to a different address” checkbox and act accordingly. It also handles saved addresses on logged in accounts.

We recommend adding this code to a custom site functionality plugin, but it can also be added to a child theme’s functions.php file.

Partially based on code from emartmedia.com.

https://gist.github.com/razorfrog/989a14c97317de665e661a96bffb765b