I know some HDPE (High Density Polyethylene) containers have been found to contain PFAS, so it would be safe to assume those that are still in use in my kitchen also contain them but I've no simple way of telling for sure. But it's safe to assume the worst.

Also I use lots of large HDPE storage boxes to store everything from old papers and documents to tools and I've a long-term complaint about them in that they sweat their plasticizers and that has practical implications as it shortens their useful life.

Whenever a year or two later I rummage around looking something stored in the boxss I notice that they've developed a sort of greasy film on them like one would expect to find had they'd been stored in a kitchen where one does lots of frying.

So unless they're stored in a clean pristine place—which is impractical where I live—they'll collect dust that simply cannot be just brushed off as the dust mixes with the oil-like plasticizer. So every now and then I'll clean them by spraying them with a household cleaner that's a soapy surfactant then rinse them. I'm unaware exactly what plasticizers are used and or whether they contain significant amounts of PFAS.

However, over time, as the plasticizers leach out, the polyethylene goes a slight yellowish color and becomes very brittle, and it's commonplace for me to replace them. When old, they'll easily break open if stacked too high or if accidentally dropped.

To put it bluntly, I'm damn sick of having to clean and replace them all too frequently. The old ones end up wherever trash collectiors dump them (even if I put them with plastic recycling I've heard they're still likely to end up in landfill where they'll continue to leach plasticizer, FFAS etc. not to mention fragment into nano plastic particles and spread into the environment).

There are much better more durable plastics available than polyethylene that are much less likely to leach, and if used to make boxes and similar stuff it would make them much more rugged and durable, they could then last indefinitely—50+ years or more.

Trouble is manufacturers don't want people to keep stuff indefinitely, they just want people to buy more.

I reckon this problem can only be fixed by legislation. The sooner the better.