If PFAS are the uninvited houseguests, here are a few polite-but-firm ways to stop feeding them and slowly show them the door.​

•Check your water (and filter like you mean it).

•If your area is known or suspected to have PFAS in drinking water, consider filters certified for PFAS (often reverse osmosis or certain activated carbon systems) for what you drink, cook with and mix in baby formula. Think of it as a bouncer for your kitchen faucet.​

•Be choosy with non-stick and “magic” surfaces.

•Many super-slick, stain-proof, water-proof, grease-proof products can involve PFAS: some non-stick pans, stain-resistant sofas, and water-repellent clothing. Use alternatives like stainless steel or cast iron cookware, and don’t treat every fabric in your house like it’s joining a pageant under the rain.​

•Treat fast food packaging with suspicion.

Grease-resistant wrappers, boxes and microwave popcorn bags can be PFAS hangouts. You can:​

Transfer takeout food to a real plate at home.

•Go for less-packaged options when possible.

•Avoid cosmetics, dental floss or household products that mention “fluoro” or “PTFE” in the ingredients, or brag about “stain-proof,” “oil-repellent,” or “waterproof” without saying how.

•Individual choices help, but PFAS are a policy-level problem. Back moves to:​ Set strict PFAS limits in drinking water.

•Require companies to report PFAS use and emissions.

•Ban PFAS as a class so they cannot just rebrand like a boy band with the same members.​

These steps will not kick PFAS out overnight — they are infamous for their long half-lives in the body and environment — but every barrier you put up is one less open door for these overstaying “guests.”