Is It Safe to Buy Used Baby Bottles? Bottles Yes, Nipples No

Usually yes for the bottle itself, and no for the nipple. A hard bottle with no cracks, no cloudiness and no warping can be cleaned and sanitized the same way you would treat a brand-new one, using the steps the U.S. Centers for Disease Control and Prevention (CDC) publishes for every parent. The soft nipple is different. It is the part that wears, tears and can break into pieces a baby could choke on. So the simple rule is: reuse the bottle if it passes the checks below, and put a new nipple on it.

A used bottle can pass a check. A used nipple is the part to buy new.

Most of the pages that answer this question today are baby-brand blogs and listicles, and they disagree. Some say never buy bottles used, others say it is fine. Few point to what the health agencies actually publish. This guide does.

Why do people say never to buy used baby bottles?

There are three worries behind the "never" advice, and each one has a real answer.

1. Germs. A bottle has been in another baby's mouth. The CDC's cleaning steps, covered below, are built for exactly this, and they are the same steps it asks parents to use on their own bottles every day.
2. Wear. Nipples break down with use. Health Canada (page dated November 2025) tells parents to look at nipples before and after every use and to throw away any that show wear and tear, because a baby can choke on broken pieces. You cannot know how a stranger's nipple was used, which is why this guide says to replace it.
3. Old plastic and BPA. Many people worry that an old plastic bottle contains BPA. That one depends on how old the bottle is, and the next section explains the date that matters.

So the honest answer is not "never." It is "the bottle can be fine, the nipple should be new, and an old bottle of unknown age deserves a second thought."

Do old baby bottles contain BPA?

Some might. Here is what the U.S. Food and Drug Administration (FDA) says on its BPA page (content current as of April 2023):

• In July 2012, the FDA changed its rules so that BPA-based polycarbonate plastic is no longer allowed in baby bottles and sippy cups.
• In July 2013, it did the same for BPA-based coatings in infant formula packaging.
• Both changes were made because manufacturers had already stopped using those materials, not because the FDA found them unsafe. The FDA states plainly that a change made on that basis is not a safety finding, and it says the information available supports the safety of BPA in its currently approved uses.

What that means for a secondhand shopper is simple. A baby bottle sold new in the U.S. after mid-2012 should not be made of BPA-based polycarbonate. A hand-me-down from before then might be. If a bottle has no box, no brand you can look up, and no way to tell when it was made, you do not know which side of that date it falls on.

That does not make an old bottle dangerous by default, since the FDA's own position is that BPA is safe at current levels in food. But if avoiding it matters to you, the easy move is to skip bottles you cannot date and choose ones you can.

What to check before you buy a used baby bottle

Use this checklist with the bottle in your hand, in good light, before you pay.

Two of these deserve a word. First, make sure new nipples for that brand are still sold, because a bottle you cannot fit a fresh nipple to is not much use. Second, look the brand and model up on the U.S. Consumer Product Safety Commission's recall site before you buy, the same habit we explain in our guide to checking recalls before buying secondhand.

How do you clean and sanitize a secondhand bottle?

The CDC's guidance (page dated March 2025) applies to any bottle, new or used. Take every part apart first. Then:

1. Wash. Use hot, soapy water in a basin you use only for feeding items, with a brush kept for the same job, and squeeze water through the nipple holes. Rinse under running water. Or use a dishwasher with hot water and a heated drying or sanitize setting, with small parts in a closed basket or a mesh bag.
2. Sanitize. Pick one of the CDC's three methods, and check the maker's instructions first:

• Boil: cover the parts with water, bring it to a boil, and boil for 5 minutes. Lift them out with clean tongs.
• Steam: use a microwave or plug-in steam sanitizer, following its directions.
• Bleach, if you cannot boil, steam or use a dishwasher: mix 2 teaspoons of unscented bleach into a gallon of water, submerge everything with no air bubbles trapped inside, soak for at least 2 minutes, and do not rinse.

1. Dry. Let everything air-dry fully on a clean towel or paper towel. The CDC says not to rub or pat items dry with a dish towel, since that can spread germs.
2. Store. Once dry, put the parts together with clean hands and keep them somewhere closed and clean, like a cabinet used only for clean dishes.

The CDC says sanitizing matters most for babies under 2 months old, babies born early, and babies with a weakened immune system. For a secondhand bottle, sanitizing before the first use is a sensible step whatever the baby's age. If your baby is in one of those groups, follow your own pediatrician's advice on what is right for them.

Glass, plastic or silicone: does it change the answer?

The material changes what you look for, not whether it can be reused.

• Glass has no BPA question, but check it closely for chips, especially around the rim and threads, where a chip can break off.
• Hard plastic is where the 2012 date matters. Look for scratches inside, cloudiness and warping, which are signs of heavy use.
• Bottles with drop-in liners use a fresh liner each feed, so the holder can often be reused. You still need liners that fit and a new nipple.

Whatever the material, the nipple rule stays the same. Health Canada also warns never to make the hole in a nipple bigger, because it can tear and become a choking risk. If the flow seems wrong, buy the next flow size instead.

The bottom line

A used baby bottle is not a hard no. If it has no cracks, sits true, comes from a brand you can still buy nipples for, and is recent enough that you are comfortable with the plastic, wash it, sanitize it the CDC's way, and put a new nipple on it. If you cannot tell its age, cannot find matching nipples, or see any damage, let it go.

Building a nursery on a budget in DC, Maryland or Virginia? Our guides to a used breast pump and a used crib or high chair cover the other big questions, and you can browse what is in stock today in our categories. Questions about how buying from us works are answered on our FAQ.

Know a new parent sorting through hand-me-downs? Send them this checklist.