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A parent handed me a rubber giraffe at a playground — one of those iconic ones with the squeaky neck — and asked me to smell it. I did. There was a faint, unmistakable rubbery chemical scent. She’d been wondering for months whether it was safe, whether she should throw it away, whether there was something better. She wasn’t wrong to wonder.
Choosing a teething toy sounds simple until you start reading labels. “Natural rubber,” “food-grade silicone,” “BPA-free,” “non-toxic” — these phrases appear on packaging with no shared definition and no consistent standard behind them. Some mean something. Some are marketing shorthand. And when the product is going directly into your baby’s mouth for hours at a time, the difference matters.
This article runs silicone and rubber side by side across five practical criteria that parents actually care about: chew resistance, ease of sterilisation, toxin risks, environmental footprint, and value for money. By the end, the recommendation is clear — but it’s worth walking through the reasoning so you know exactly what you’re buying and why.
1. Chew Resistance: Which Material Lasts Under Real Pressure?
Teething babies are not gentle. The biting force of a seven-month-old sounds trivial until you see what they’ve done to a soft rubber toy after two weeks.
Natural rubber has a certain elasticity that feels satisfying to bite, and teethers made from latex-based rubber do have good initial give. The problem is degradation. Natural rubber breaks down under repeated stress, UV exposure, and contact with saliva — which is slightly acidic. Over time, the surface can develop small fissures and tears. Inside those tears, mold and bacteria accumulate. A rubber teether that looks fine on the outside might be harbouring growth in a crack you can’t see or reach.
Food-grade silicone behaves differently. It’s a synthetic polymer — derived from silica (essentially sand) — and it maintains its structure across a wide temperature range and under repeated mechanical stress. Silicone teethers don’t fissure the way rubber does. The surface stays smooth and non-porous even after months of chewing, dishwasher cycles, and sterilisation. That physical stability matters because it means there are fewer places for bacteria to hide.
One thing worth knowing: silicone isn’t indestructible. A baby with teeth already coming in can sometimes bite through very thin silicone pieces, so thickness and design still matter. But across the pre-tooth and early teething phase — roughly four to twelve months — food-grade silicone holds up significantly better than natural rubber in terms of long-term integrity.
2. Sterilisation: Which Cleans More Reliably?
Parents sterilise teethers constantly. They drop on the floor, get passed between siblings, sit in a bag. How well each material survives that cleaning process is worth thinking through before purchase.
Natural rubber teethers should not be boiled or put in a dishwasher. Heat accelerates the degradation of rubber, causing it to become tacky, lose shape, and — in some cases — release compounds into whatever it contacts. The manufacturer instructions on most rubber teethers specify wiping with a damp cloth. That’s fine for surface dirt, but it won’t sterilise.
Silicone teethers can typically go into boiling water, a dishwasher, or a UV steriliser without issue. The material doesn’t absorb water, doesn’t react to heat at the temperatures used in domestic sterilisation, and doesn’t leach. This makes silicone teethers substantially easier to keep genuinely clean, not just surface-clean.
There’s also the hollow interior problem. Several popular rubber teethers — including the squeaky giraffe style — have a hollow interior accessible through a small hole. Liquid gets in during bathing or cleaning and can’t fully dry out. Multiple consumer investigations, including reports from European consumer groups, have found mold growing inside these toys even when the exterior looked pristine. This isn’t a fringe concern. It’s been documented repeatedly.
Solid silicone teethers don’t have this problem. And even silicone teethers with textured surfaces or ridges can be cleaned in a dishwasher and dried completely, because the material is non-absorbent.
3. Toxin Risks: BPA, Phthalates, Nitrosamines, and What Labels Don’t Always Say
This is the section that takes the longest to unpack, because the terminology gets used loosely and parents deserve specificity.
BPA (bisphenol A) is a chemical used in certain plastics that disrupts hormone function. It has been banned from baby products in Canada, the EU, and many other jurisdictions. Most reputable teether brands — in both rubber and silicone categories — will say “BPA-free,” and in this case the claim tends to be accurate because BPA isn’t typically used in rubber or silicone production in the first place. The label is technically truthful but not especially meaningful.
Phthalates are plasticisers used to make PVC flexible, and they are a legitimate concern in plastic toys. They’re less relevant to pure natural rubber or pure food-grade silicone. However, some lower-quality rubber products do contain synthetic additives, fillers, or processing aids that may include phthalate-adjacent compounds. Third-party testing matters here. A product that says “natural rubber” without an independent certification behind it is harder to verify.
Nitrosamines are where natural rubber specifically carries a documented risk. The vulcanisation process — used to harden and stabilise rubber — can produce nitrosamines as a by-product. The European Food Safety Authority (EFSA) has flagged nitrosamines as a concern for baby products, and some European jurisdictions have set limits on nitrosamine migration from rubber teethers. A high-quality natural rubber teether from a certified manufacturer can meet these limits. But it requires active testing and certification to confirm, and not all brands provide that.
Food-grade silicone carries none of these concerns. It does not require vulcanisation. When manufactured without fillers (a low-quality silicone product may include chalk or other fillers to reduce cost), it is chemically inert, doesn’t react with saliva, and doesn’t degrade into compounds that migrate into the body. That chemical stability is why it’s used in medical devices, food containers, and kitchen equipment — not just baby toys.
At Loulou Lollipop, the silicone teethers are made from food-grade silicone that’s free from BPA, PVC, phthalates, and lead, and they’re certified to relevant safety standards — which is the kind of verified claim that matters when you’re buying for a newborn.
4. Environmental Impact: Sustainability Credentials Side by Side
Neither material is perfect from an environmental standpoint, and it’s worth being honest about that.
Natural rubber has a genuine sustainability case. It comes from rubber trees (Hevea brasiliensis), which absorb CO2, and the tapping process doesn’t kill the tree. In theory, it’s a renewable resource. In practice, the sustainability of any rubber product depends heavily on sourcing. Monoculture rubber plantations can cause deforestation and biodiversity loss. Transportation from Southeast Asia — where most natural rubber is produced — adds carbon. And at end-of-life, natural rubber breaks down, but not quickly, and not cleanly if it contains vulcanisation chemicals.
Silicone is a synthetic material, which sounds environmentally suspicious, but the picture is more nuanced. Silicone is derived from silica, one of the most abundant materials on earth. It’s durable, which means products last longer and require less frequent replacement. It can be recycled at specialist facilities, though this infrastructure is not widely available to consumers. It doesn’t biodegrade, but it also doesn’t break down into microplastics the way polyethylene or PVC does.
On balance, a food-grade silicone teether that lasts two years is probably a better environmental bet than a natural rubber teether that degrades in six months and needs replacing. Longevity counts. And brands that hold B Corp certification — which Loulou Lollipop does — are independently assessed on their broader environmental and social practices, which provides a layer of accountability beyond what’s printed on the packaging.
5. Value for Money: The Real Cost Over Time
The entry price of rubber teethers is often lower. A natural rubber teether from a mainstream brand runs roughly $15–$25 CAD. Silicone teethers from quality brands sit in the $15–$35 CAD range. On sticker price alone, they’re comparable.
But the lifecycle calculation shifts the comparison. A rubber teether that develops surface fissures or mold within a few months needs replacing. A parent who buys three or four rubber teethers across a teething period may spend more than one who buys two well-made silicone pieces that stay clean, intact, and safe throughout. Hygiene failures also have non-financial costs — a teether that needs to be thrown away because you can’t properly sterilise it is a hassle on top of the expense.
There’s also the multi-use angle. Silicone teethers often double as sensory toys, and many are designed with shapes and textures that work beyond the infant teething window. A silicone teether your baby uses from four months may still be getting use at eighteen months as a sensory toy — which rubber teethers rarely manage to do, because the material quality tends to decline faster.
If you’re comparing just the purchase moment, rubber looks competitive. If you’re comparing across a year of use, silicone — particularly from a brand that sells certified, award-winning products with documented safety standards — holds its value better.
The Verdict
The case for food-grade silicone comes down to three compounding advantages: it stays structurally intact under real conditions, it can be properly sterilised in ways that rubber cannot, and it doesn’t carry the nitrosamine or degradation risks that affect lower-quality rubber products.
Natural rubber isn’t categorically unsafe. A certified, high-quality natural rubber teether from a brand that publishes its third-party test results can be a reasonable choice. But the verification burden is higher. You’re trusting that the vulcanisation was done correctly, that nitrosamine levels were tested, that there’s no hollow interior filling with water, and that the rubber hasn’t been blended with synthetic fillers. That’s a lot to confirm.
Silicone starts from a simpler, more verifiable baseline. Food-grade silicone without fillers is chemically inert, provably clean-able, and doesn’t degrade in ways that introduce new hazards.
For parents comparing materials, the choice that requires less investigative work and carries fewer risk categories is food-grade silicone — particularly from brands that make their safety certifications, material sourcing, and testing results available. That transparency is part of what separates a trustworthy product from one that’s simply labeled “non-toxic.”
If you’re navigating the broader world of silicone baby products, the comparison between silicone and plastic baby tableware follows similar logic — the same material properties that make silicone superior in teethers apply when your baby starts moving to bowls and plates. And if you’re thinking ahead to when solid foods start, understanding what age babies can use silicone tableware is a useful next step.
The teething phase passes quickly. What you put in your baby’s hands and mouth during it doesn’t need to be a source of ongoing uncertainty.
