Bottle Washer vs Dishwasher for Baby Bottles: What's the Difference?
If you already have a dishwasher, the question is fair: can it handle baby bottles? And if so, do you really need a dedicated bottle washer?
The short answer is that a dishwasher can clean bottles, but it can't sterilise them - and that distinction matters for babies under 12 months.
Can you wash baby bottles in a dishwasher?
Yes. A dishwasher will clean baby bottles effectively, removing milk residue and visible debris. Most modern bottles are dishwasher-safe, check the manufacturer's instructions, but MAM, Tommee Tippee, Dr Brown's, and Philips Avent all confirm dishwasher compatibility for their main bottle ranges.
Plastic components should go on the top rack to avoid the most intense heat, which can warp or degrade plastic over repeated cycles. Glass bottles can go anywhere.
Why a dishwasher alone isn't enough for newborns
Here's the issue: domestic dishwashers in the UK typically run at 55-65°C on a standard cycle. At 65°C, most common bacteria are killed, but not all and not reliably. The NHS definition of sterilisation requires sustained heat at higher temperatures or a chemical or UV process that guarantees pathogen elimination.
For babies over 12 months with more developed immune systems, a dishwasher wash is generally considered acceptable. For newborns and babies under 12 months, current NHS guidance recommends sterilising equipment after washing – dishwasher or not.
So the sequence for dishwasher users needs to be: dishwasher wash → then sterilise separately. The dishwasher doesn't replace the sterilising step.
What a dedicated bottle washer does differently
A dedicated bottle washer (particularly a combined wash-sterilise-dry unit like the Bebello) is designed around the specific geometry of baby feeding equipment. It handles:
- Narrow bottle necks and internal surfaces that standard dishwasher spray arms struggle to reach
- Small components like teats, rings, and lids that can flip over in a dishwasher and not get cleaned properly
- The full cycle: washing AND sterilising AND drying in one sequence, so you're not running two separate appliances
- Breast pump parts and other feeding accessories that need similar treatment
A dishwasher is designed for plates, glasses, and cutlery. Bottles are an afterthought in the design – they work, but not optimally.
If you're looking for a machine that does the full job – wash, sterilise, and dry – without needing a dishwasher and a steriliser running alongside each other, the Bebello 4-in-1 might be worth a look.
Frequently asked questions
Are dishwashers safe for baby bottles?
Dishwashers are safe for cleaning baby bottles, they won't damage them if the manufacturer says dishwasher-safe. But they don't sterilise, so for babies under 12 months you still need a separate sterilising step after washing.
Can I sterilise in a dishwasher?
No. Domestic dishwashers don't reach the temperatures or use the methods needed to meet the definition of sterilisation for infant feeding equipment.
What temperature does a dishwasher wash at?
Standard cycles run at 55-65°C. Some ECO cycles run lower. Sterilisation requires either sustained higher heat or a separate method.
Do I need to wash bottles before sterilising?
Yes, always. Sterilising doesn't clean, it kills bacteria on surfaces that have already been physically cleaned. Milk residue left in bottles before sterilising can harbour bacteria even after a sterilising cycle.