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Why Sterilization Matters More Than You Might Think
A silicone teether spends a lot of time on the floor, in the diaper bag, and in your baby’s mouth — sometimes in that exact order. Saliva and milk residue collect on the surface within minutes of use, and while food-grade silicone’s non-porous structure makes it harder for bacteria to embed than wood or plastic, the surface still needs regular deep cleaning.
These small, chewable objects accumulate saliva, milk residue, dust particles, and microbial contaminants faster than most caregivers realize. A quick rinse under the tap handles the visible stuff, but it does not come close to sterilization. The good news: food-grade silicone withstands temperatures above 200°C without leaching chemicals or losing shape, which means every heat-based sterilization method available to parents is well within the material’s tolerance range.
Before comparing methods, one rule applies to all of them: always wash the teether first with mild soap and warm water to remove physical residue. Sterilization kills microorganisms — it does not scrub off dried puree or formula buildup. Skipping the pre-wash step means you are sterilizing a dirty object, which is less effective than it sounds.
Method 1: Boiling
Boiling is the oldest and most accessible method. No special equipment, no waiting for a cycle to finish — just a pot of water and two minutes of attention.
How to do it: Bring a pot of clean water to a rolling boil, then turn off the heat (or reduce to a low simmer). Drop the silicone teether in for 3–5 minutes. Remove with tongs — never with bare hands — and place on a clean towel to air dry completely before use.
Why the timing matters: Boiling for 3–5 minutes is the standard recommendation, and you should avoid exceeding 8 minutes to maintain the teether’s elasticity. Three to five minutes at 100°C is sufficient to eliminate the bacteria and viruses most likely to be present on a teether surface. Extending the boil well beyond that does not meaningfully improve sterilization — it just puts unnecessary heat stress on the silicone over time.
One practical note: make sure the teether does not touch the bottom of the pot while boiling to avoid damage. A rolling boil can push lightweight silicone pieces against the hot metal base, which can leave marks even on heat-resistant material. Keeping the water at a gentle simmer after the initial boil reduces that risk.
Boiling is best suited for situations where speed and thoroughness both matter — after the teether drops on a public floor, during a bout of illness, or when you are between sterilizer cycles and need a clean teether now. It tends to be the method parents reach for first because it requires nothing extra.
Method 2: Top-Rack Dishwasher
The dishwasher is the most convenient option for parents who are already running a load at the end of the day. It handles the wash and sanitize steps in one cycle, which saves time.
How to do it: Place the teether on the top rack of the dishwasher only — away from the heating element at the bottom. Use a mild, natural detergent, run on a normal cycle, and allow the teether to cool and air dry before returning it to your baby.
The top-rack placement is not optional. The heating element at the bottom of most dishwashers runs hotter than the water temperature, and direct contact with it can warp or discolor even food-grade silicone. The top rack keeps the teether in the hot water stream without that direct heat exposure.
One honest limitation worth knowing: while a top-rack dishwasher cycle is a convenient option for a quick wash and rinse, it may not fully sanitize the toys if you are looking for a deeper clean. Dishwasher water temperatures vary by machine and cycle setting. For routine daily cleaning after normal use, the dishwasher is probably fine. For post-illness sterilization or after a drop in a high-traffic public space, boiling or steam will give you more confidence.
Loulou Lollipop teethers are top-rack dishwasher safe and can also be sterilized in a sterilizer, or hand washed with mild baby soap and rinsed with water.
Method 3: Electric Steam Sterilizer
Steam sterilizers — the countertop electric units most parents already use for baby bottles — are the most thorough and hands-off option available. They use pressurized steam to reach every surface of the teether without chemicals, and they are designed specifically for baby items.
How to do it: Fill the steam sterilizer with the recommended amount of water per the manufacturer’s instructions. Place the silicone teether on the designated tray inside the sterilizer, close the lid, and set the timer according to the manufacturer’s guidelines. Once the sterilization cycle is complete, wait for the teether to cool down before removing it, then allow it to air dry on a clean surface.
Steam sterilizers use controlled heat to sanitize silicone baby teethers quickly and effectively without causing material damage. The advantage over boiling is consistency: the sterilizer maintains a precise temperature and pressure throughout the cycle, which removes the guesswork of watching a pot. And because most parents already own one for bottles and pacifiers, adding the teether to the same cycle adds no extra effort.
The same machine used for sterilizing bottles can also sterilize teethers — whether it’s steam or UV, most silicone teething toys can be cleaned in them. It’s a quick, easy, and hands-free way of cleaning, allowing you to get other tasks done.
One thing to confirm before using a steam sterilizer on any teether: the product should be 100% solid food-grade silicone with no gel filling, electronic components, or mixed materials like fabric or beechwood. If you have teethers made of mixed materials, you cannot boil or steam them — you must clean each material on its own terms.
Comparing the Three Methods: A Practical Summary
Each method has a clear best use case, and most parents end up using all three depending on the situation.
Boiling delivers reliable sterilization with no equipment investment. It is the right call after illness or a public drop, and it works on any solid food-grade silicone teether. The main downside is that it requires active attention — you cannot walk away from a pot on the stove.
Top-rack dishwasher is the easiest daily habit. It cleans and sanitizes in one step and fits into the end-of-day routine without adding extra tasks. It is probably sufficient for routine maintenance between deeper sterilizations, but it is not the strongest method for post-illness use.
Steam sterilizer is the most thorough hands-free option. It is ideal for parents who already run sterilizer cycles for bottles and want to add the teether to the same load. It requires a machine, but if you have one, it is the most consistent method available.
One method to avoid across all silicone baby items: silicone should not be sterilized with alcohol or bleach. Both can degrade the surface over time and leave residue that is unsafe for a baby to mouth.
How often should you sterilize? Clean with soap and water daily. Sterilize by boiling or steaming once or twice a week, or immediately after the teether drops on a dirty public surface. During illness, sterilize after every single use.
And regardless of how well you sterilize: inspect teethers regularly and replace immediately if you see deep scratches or any signs of tearing, cracking, or discoloration — those surface changes can harbor bacteria that sterilization alone will not fully address.
What Makes a Teether Worth Sterilizing in the First Place
Sterilization only works as well as the material allows. A teether with seams, cracks, painted surfaces, or gel filling cannot be fully sterilized regardless of the method — there will always be places where bacteria can hide or where heat can cause damage.
Silicone’s non-porous surface discourages bacterial colonization compared to wooden or some plastics, and silicone teethers tolerate repeated chewing, bending, and sanitizing cycles without cracking or breaking down when the correct durometer and compound are chosen.
For parents looking for a teether designed with exactly these considerations in mind, Loulou Lollipop’s silicone teether collection is built from 100% food-grade silicone that is free of BPA, PVC, phthalates, lead, and cadmium. The silicone is made from natural silicone found in sand using a manufacturing process that meets high environmental standards, and is free from harmful chemicals — featuring 100% water-based and food-safe inks that are injected into the silicone instead of applied on top. That last detail matters for sterilization: surface-applied dyes or coatings can flake or degrade under repeated heat exposure, while injected color stays stable through boiling, steam, and dishwasher cycles alike.
The teething sets pair the silicone teether with a clip, so the teether stays accessible without constantly ending up on the floor — which, practically speaking, means fewer emergency sterilizations mid-day. It is a small design choice that adds up over months of daily use.