I’m seeing warnings on products. What do they mean?

Some of Thumper Massager’s products are packaged with the following warning:

⚠ WARNING: This product can expose you to chemicals including di(2-ethyhexyl) phthalate (DEHP), which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to

These warnings are required by California’s Proposition 65 labeling law, which requires businesses to notify consumers about chemicals on the Proposition 65 chemical list under certain circumstances.  There are over 900 substances -both natural and synthetic- identified on the Proposition 65 chemical list, and new chemicals are added to the list every year.

Proposition 65 is not a product safety law and does not ban or regulate the sale of any products; it only requires warnings. You may have seen similar warnings in California on other products, or in supermarkets, coffee shops, airports, hotels, restaurants, and on e-commerce sites. 

Does a warning mean that the products aren’t safe?

Thumper Massager is committed to selling products that are safe for personal use and also comply with all applicable laws. California’s Proposition 65 is not a product safety law, but a notification law that uses very conservative standards – among the most conservative in the world – to establish when notifications are required.  Consistent with that conservative approach, Thumper Massager provides Proposition 65 warnings. Although you should always take heed of product warnings, the presence of a Proposition 65 warning does not mean that the product is unsafe. All of Thumper Massager’s products are safe to use as intended.

But I’m not a California resident – why are there warnings on the product I purchased?

The distribution of products – whether Thumper Massager products or any other product – can be very complex, with numerous distribution channels.  It is not possible for Thumper Massager, or most other companies, to control where their products ultimately are sold, especially with the continuing rise of e-commerce sites.  For this reason, Thumper Massager provides the Proposition 65 warning for all its products, no matter where they are sold, even though the warnings are only intended for California customers.

Why don’t all similar products on the market carry the same warning?

Some manufacturers of similar products elect not to provide warnings, because they have concluded that they are not required to do so under Proposition 65. Other manufacturers take a different warning approach, sometimes because they have been involved in a Proposition 65 settlement and are required to provide certain warnings under the settlement agreement. Since many of our products are sold in California, we have opted to add warnings to all applicable products out of an abundance of caution.

Still confused?

You can find more detailed information about Proposition 65 compliance on the website for the California Office of Environmental Health Hazard Assessment (OEHHA) at or visit