Five Filers Wrote Half the Prop 65 Complaints About Your Bed

Proposition 65 is the reason so many things in your house carry a cancer warning. It is also the most-cited evidence in any argument about chemicals in consumer goods, because unlike almost every other law it leaves a public paper trail. Before anyone can sue, they must file a 60-day notice with the California Attorney General naming the chemical, the product and the company1. Regulatory

That register is free, it runs back to 1988, and anyone can search it2. So it ought to answer the question this site is asked more than any other: what is actually in the bed? Regulatory

We pulled it to find out. The answer turns out not to be what the record contains. It is what the record is.

Five filers wrote nearly half of it

Searching the register across eleven bedroom product terms returns 358 notices filed between 2008 and 2026, naming 323 different companies7. Inferred

Forty-nine different parties filed those 358 notices. The five most active filed 163 of them, or 46 per cent. One limited-liability company accounts for 52 on its own, and three of the top five are individuals filing under their own names7. Inferred

That one number reframes everything else. This is not a survey of the bedding market. It is a record of what a few dozen private enforcers chose to look at, in the order they chose to look at it. When a chemical looks prominent here, the first thing that tells you is that somebody decided to test for it.

That count is our own arithmetic on the Attorney General's public register, not a figure from a paper, and anyone with a browser can reproduce it.

Nearly four fifths of it is one chemical family

Of the 358 bedroom notices, 281 name a phthalate, most often DEHP. That is 78 per cent7. Inferred

Everything else is a rounding error beside it. Formaldehyde appears in nine notices. The flame retardant TDCPP, which turns up in house-dust study after house-dust study, appears in eleven. TCEP appears in two7. Inferred

This is not evidence that phthalates are the main chemical risk in a bedroom. It is evidence that they are cheap to test for, they are in soft vinyl, and there is a worked-out legal playbook for bringing the case. The register rewards whatever is easiest to prove.

One in seven is about the bag

This is the part that should stop anyone planning to build a product from this data. It stopped us.

Fifty-two of the 358 bedroom notices name the packaging rather than the product, in the Attorney General's own words, in the field that describes what was tested7: Inferred

• Clear plastic zippered storage case of mattress pads3
• Plastic bag containing a Sealy Posturepedic Cooling Comfort Fitted Mattress Protector King Size4
• Exposure to the plastic case of the Deluxe Home Mattress Pad Down Alternative — Clear Plastic Zip Case5

The DEHP in those notices is in the zippered vinyl case the bedding came in. It is not in the bedding. Anyone skimming a list of mattress protectors flagged for DEHP would take away the opposite of what the record says, and so would any software that joined this data automatically. Regulatory

The ambiguity is not always resolvable, either. Two notices five weeks apart name the same product under the same UPC. One describes the plastic zip case5; the other describes only the mattress pad6. Read the first and the chemical is in the packaging. Read the second on its own and you would reasonably conclude it is in the bedding. Regulatory

And most of it never resolved

A 60-day notice is an allegation. It is the opening move by a private party who stands to be paid, not a test result and not a finding by a regulator.

In 206 of the 358 bedroom notices, 58 per cent, the Attorney General's own database records no complaint, no settlement and no judgment7. Nothing happened, or nothing that was reported back. Of the minority that did settle, Proposition 65 matters are routinely resolved by consent judgment without any admission of liability, so even those establish nothing about what was in the product. Inferred

So the honest summary of nineteen years of enforcement in the bedroom is this: 358 allegations, four fifths of them about one chemical family, one in seven about packaging, and more than half never resolved.

What we were going to build, and why we are not

We did not go looking for this. We went looking for a dataset.

Embr publishes the Exposure Ledger, which joins 268 compounds across ten public datasets: drinking water, biomonitoring, chemical law, ambient air, production volume, industrial releases, dose benchmarks and enforcement action7. It answers a great many questions. It does not answer the one people actually ask, which is whether a chemical is in the thing they are about to buy. Inferred

The notice register looked like the answer. Every record carries a named chemical, a named product and a named company, which is exactly the shape that gap needs. We built the crawler, pulled 953 notices across 23 product categories, resolved the chemicals against our own Atlas, and got 18 compounds and 884 compound-and-brand pairs. On paper, a working dataset.

Then we read what the records said. The four findings above are why there is no dataset. Publishing it would have meant implying that named products contain chemicals, on the strength of unresolved allegations, one in seven of which concern a plastic bag.

There is a second reason and it belongs in the open. Embr is funded by a mattress retailer that the founder owns, which is stated on our about page and in every disclosure we publish. A publication that names competitors' products using allegations it has not verified is in a different position from an ordinary newsroom, and it should be. That conflict is a reason to hold this data to a higher bar, not a lower one.

What the register is good for

It is genuinely useful once you read it as what it is: an excellent record of enforcement attention. It shows what private enforcers are testing, which chemicals have a worked-out playbook, and how that shifts over time.

PFOA appears in 57 notices across our full pull, none of them earlier than 20227. That is the PFAS wave arriving in consumer enforcement, visible in real time, and it is a real signal about where the regulatory environment is going. Inferred

What it cannot tell you is what is in your mattress. For that the honest answer remains the one this site keeps arriving at: nobody has measured it. No public dataset records the chemical composition of the specific bed you own, and no enforcement register substitutes for a measurement. If you want the separate question of which bedroom chemicals California has listed, rather than which ones somebody has filed about, we answered that in Prop 65 and bedroom chemistry.

What this does not establish

Our search used eleven bedroom product terms against a free-text field, so notices worded unusually were missed. 358 is a floor, not a census. Three of the broader product terms in our full pull returned exactly 200 results, which is a display cap in the Attorney General's search rather than a true total, and we have not used those categories in any percentage here.

The packaging count comes from pattern-matching the product description. It will miss notices that describe packaging in wording we did not anticipate, and it may catch a product that merely mentions a bag. We have not read all 358 by hand.

And the absence of a notice means nothing at all. Nobody is obliged to test anything. A compound absent from this register may be absent because it is not there, or because no enforcer has looked.

Frequently asked questions

Does a Prop 65 warning mean my mattress contains a harmful chemical?

Not on its own. The warning is a disclosure a business chooses to give to avoid liability, and many are applied broadly as a precaution. A 60-day enforcement notice is a different thing again: an allegation by a private party who stands to be paid, not a test result and not a regulator's finding. Regulatory

What is a Prop 65 60-day notice?

Before a private party can sue under Proposition 65, they must file a notice with the Attorney General naming the chemical, the product and the company, then wait 60 days1. Those notices are public and searchable back to 1988. Regulatory

Why do so many bedding notices name phthalates?

Because they are cheap to test for, they are in soft vinyl, and the legal playbook exists. In our pull, 281 of 358 bedroom notices name a phthalate7. That is a fact about enforcement, not about relative risk. Inferred

Can I look up Prop 65 notices for a specific product?

Yes, and you should, because it is free2. Read the product description carefully: 15 per cent of the bedroom notices we pulled describe the packaging rather than the product inside it. Regulatory

Does the absence of a notice mean a product is safe?

No. Nobody is obliged to test anything, so absence may mean the chemical is not present, or that no private enforcer has looked for it.