Baby & Kids 101: The 28 Swaps That Matter, in Priority Order

Move bottles and cups to glass or steel

Heated formula in a plastic bottle is one of the highest microplastic doses measured anywhere, up to 16 million particles per liter. Free version: Never heat formula in the bottle. Mix in glass, cool it, then transfer. That removes most of it today.

Change the crib mattress

Fourteen hours a day, face down, on the single largest piece of foam and vinyl in the house. Most crib mattresses are polyurethane foam under a PVC or TPU waterproof cover, warmed all night by the baby lying on it. Free version: Air a new mattress out of its wrapping for a week with the window open before it is slept on.

Pump into glass

Warm milk into plastic flanges and bottles, several times a day. Milk is high fat, which pulls more out of plastic. A closed system is the one thing the pump itself decides: it keeps milk out of the tubing and the motor, which you cannot clean or replace. For the freezer, glass is the cleanest but costs more and takes space; reusable silicone bags are the practical pick, and the cold slows what silicone gives off. Free version: Transfer to glass immediately after pumping instead of storing in the plastic bottle.

Give vitamin D drops from a glass bottle

Nearly every breastfed newborn is told to take this daily for a year, and nine of twelve children's vitamins sent to an independent lab tested positive for lead. Both of the two that came back non detect were liquid drops, and the highest results were chewables and gummies. D3 has to ride in an oil, and oil is the solvent that pulls additives out of plastic, so the bottle matters. Free version: None, this is a supplement a doctor asked you to give. Choose the dropper that cannot overdose: one drop, one dose, rather than a squeeze bottle or a graduated syringe holding several days at once.

Choose a cleaner formula

The entire diet for months, and independent testing keeps finding real differences between brands. Mixing water is half the feed: lead comes from the plumbing rather than the utility, so it is invisible on a water quality report, and boiling concentrates it instead of removing it. Free version: Run the tap cold for two minutes before you draw mixing water, and never mix with hot tap water. Both are free and both cut lead.

Change how you buy baby food

Pouches are plastic against warm puree, and commercial baby food has repeatedly tested high for heavy metals. Organic cannot answer that part: arsenic, lead and cadmium come out of the soil, so what matters is which foods you buy, not which label. Rice takes up more arsenic than any other grain, and rice cereal and rice puffs concentrate it. Free version: Mash whatever you are eating, and feed oats, barley or quinoa instead of rice cereal. If you do serve rice, rinse it and boil it in plenty of water, then drain, which removes a good share of the arsenic.

Make and store baby food in glass

Steaming and blending in a plastic chamber puts heat, fat, and plastic together at once. Free version: A fork and a pot. Purees do not need equipment.

Change baby wash and shampoo

Infant skin is about 30 percent thinner than yours and spends its first weeks settling from neutral to a mildly acidic pH. Fragrance is the main issue, then ethoxylated ingredients and synthetic polymers. Free version: Three baths a week, water for most of it. Recommended anyway, and free.

Change your diaper brand

Against the most permeable skin on the body, 24 hours a day, for roughly three years. Several major brands have tested positive for PFAS. Free version: Change more frequently. Contact time is the variable you control for free.

Change your wipes

Most wipes are polyester fabric soaked in preservative solution, used dozens of times a day on broken skin. Free version: Cotton washcloths and warm water. Cheaper over three years than any wipe.

Change your diaper cream

Applied thickly to already irritated skin, which absorbs far more than intact skin does. Free version: Plain zinc oxide or lanolin. The simplest formulas are usually the cheapest ones.

Set up the nursery without offgassing

New furniture, foam, and paint offgas hardest in the first months, straight into a small room where an infant sleeps 16 hours a day. Free version: Assemble and air out everything for two to four weeks before the baby uses the room. Free and genuinely effective.

Choose a flame retardant free car seat

Enclosed, heated by sun, and federally required to meet flammability standards that many brands still meet chemically. Free version: Park in the shade, and on hot drives open the windows instead of recirculating the cabin air.

No seat passes every check, so all three below are labelled compromises: each states that the fabric and foam carry no added flame retardants, and none holds a certificate testing the finished fabric. Fit and correct installation still matter more than fabric.

Move kids clothing to natural fiber

Polyester against skin all day. Sleepwear must be either flame resistant or snug fitting, so a loose pair is the treated one and snug cotton is not treated at all. Free version: Wash everything new before first wear, and buy secondhand cotton. Used natural fiber beats new synthetic.

Choose a wood or steel high chair

A plastic tray holding hot food, every meal, for two years. Free version: Put a plate on the tray instead of food directly on it.

Replace plastic teethers

An object designed to be chewed on for hours, by someone who cannot tell you it tastes wrong. Free version: A clean, chilled cotton washcloth is the classic teether and costs nothing.

Shift toys to wood and natural fiber

Anything a small child holds ends up in the mouth, and soft plastic toys are a phthalate source. Free version: Stop buying new plastic toys. Attrition handles the rest without a single purchase.

Replace foam play mats

EVA foam mats offgas formamide into the exact 30cm of air where a crawling baby breathes, and 2022 lab testing still found it in 15 of 20 foam mats. Free version: A clean cotton quilt covers the floor until a proper mat arrives.

Replace plates, bowls, and utensils

Hot food on plastic plates, every meal, for years. Melamine kids dishes leach more the hotter the food. Free version: Serve on the small ceramic plates you already own. Even if a few get broken, that costs less than a set of kids tableware.

Replace plastic and silicone bibs

PVC bibs sit against the neck and chest through every meal, and end up in the mouth constantly. Free version: An old cotton towel tucked into the collar.

Replace bath toys and tub gear

Squeeze toys hold warm water and grow mold inside, and most are PVC that a child puts in their mouth. Free version: Throw out the squeeze toys. Cups and a ladle are better bath toys anyway.

Bathe in the sink, or pick the cleanest tub

Most infant tubs are PVC or ABS, and warm water is the condition that pulls plasticisers out of PVC fastest, with the baby sitting in it. Free version: The kitchen sink with a folded cotton towel on the bottom. Stainless or porcelain, no plastic at all, and it works until they outgrow it.

Choose a natural fiber carrier

Hours of direct contact against a newborn's face and hands, usually in synthetic mesh. Free version: A woven cotton wrap is the cheapest carrier and the most natural.

Choose an organic nursing pillow

Held against you and the baby through every feed, several times a day in the newborn months, and most are polyurethane foam or polyester fill in a synthetic cover. A natural fill and an organic cotton cover avoid both. Free version: Stacked pillows you already own work, cost nothing, and many people prefer them.

Change the laundry detergent

Everything the baby wears and sleeps on is washed in it, and the residue stays in the fibre against skin. Most detergents carry undisclosed fragrance and optical brighteners that are designed not to rinse out. Free version: Run an extra rinse cycle on baby laundry. It removes most of the residue and costs nothing.

Add an air purifier to the nursery

Indoor air carries the offgassing from everything else in the room, plus the microplastic fibres shed by carpet and bedding. A purifier does not fix the source, and it lowers what is in the air while the source is still there. Free version: Open a window for ten minutes twice a day. Ventilation beats filtration and costs nothing.

Switch to a mineral sunscreen for kids

Spread over most of the body, left on for hours and reapplied, on the thinnest skin there is. Chemical filters are absorbed into blood, and zinc and titanium sit on top instead. Free version: Shade, a hat and long sleeves between ten and four. Cover what you can, then use sunscreen on the rest.

Pick a kids toothpaste that has been tested

A young child swallows most of what goes on the brush, twice a day for years, and lab testing published in 2025 found detectable lead in about 90 percent of 51 toothpastes. Free version: Brush with water and a soft brush until they can spit reliably. Technique matters more than paste at that age.