You're stood in the shop, or scrolling a website, and there are three little silicone things that all promise to catch your breast milk. A Haakaa, a collector shell, a Ladybug. They cost roughly the same, they look roughly the same, and the reviews all blur into one. Do they replace a pump? Are they just expensive nursing pads? And which one do you actually want when your breasts keep leaking and your top is wet by the end of the day?
Here's the question that sorts out the most and that almost nobody asks you: do you want to build up a stash of milk, or do you just want to stay dry? Those are two very different things and they need different tools. Most mothers buy the wrong one, not because they choose badly but because all three packets use the same word: collecting.
This article pulls the three apart. First the surprise that clears up the most: a Haakaa isn't really a collector at all, it's a pump. Then what a genuine passive collector does and doesn't do, how much you can safely catch in one, and how the hygiene side works. And at the end a simple, three-branch decision guide, so within two minutes you know which one fits your situation.
Short answer: a Haakaa draws milk with a vacuum, so it works like a simple pump and suits building up a stash. A collector shell and a Ladybug passively catch whatever leaks out on its own while you feed on the other side. That happens without pumping and it's handy for not wasting that leaked milk. And staying dry, no wet patches on your top, is a third job that none of the three does reliably all day, because they sit loose, they need emptying, and they can tip over or slide off. For staying dry, nursing pads or a bra with built-in absorbency are what you want.
First things first: a Haakaa is a pump, not a collector
This is where most of the confusion comes from. A Haakaa looks like a soft little silicone cup that you just pop onto your breast, but you squeeze it first and then let go. That creates a vacuum that pulls on your nipple. It doesn't only catch what comes out on its own, it actively draws milk out. Mothers who use one while feeding on the other breast end up with far bigger amounts than with a shell: where a passive collector lands somewhere around 40 to 75 ml, some mothers get up to 120 ml from a Haakaa in a single feed.
That sounds like a win, and sometimes it is. But there's a catch you won't read on the packet. Your breasts work on supply and demand. Everything extra you draw out per feed gets read by your body as proof that more milk is needed, as if you were feeding twins. Do that at every single feed and you can slowly drive your supply up. Lactation consultants warn about this explicitly: the thing you buy to get your leaking under control can end up making your leaking worse, because you're making more.
That doesn't make the Haakaa a bad thing. It makes it a tool with a purpose: a bit of extra milk for your stash now and then, or taking the edge off when you're full. Use it to stay dry and you're working against yourself. Why oversupply leads to more leaking is in why you make too much milk and what a forceful let-down has to do with it.
So what does a passive collector actually do?
A collector shell and a Ladybug work differently. They don't pull. You clip or press them onto the breast you're not feeding from at that moment, and they catch whatever leaks out on its own through the let-down reflex. Because when your baby drinks on one side, the milk on the other side often gets going too, and normally that drips into a pad or into your top. A collector catches that drip instead of letting it run away. That way you build up a little stash without extra pumping, and you stay drier on that side.
The amount is modest, and that's exactly the thing to know, because mothers sometimes expect hundreds of millilitres. A shell or Ladybug realistically catches somewhere between 40 and 75 ml at a time. One mother described her own haul plainly: about 30 ml per feed on the breast she wasn't feeding from. That's enough not to waste, not enough to save up a day's supply.
The difference between a shell and a Ladybug comes down mostly to the little vacuum valve. An ordinary collector shell is a curved dish that rests in your bra. A Ladybug has a valve that pulls a light vacuum so it stays in place and doesn't spill when you bend forward. In the reviews you can see the vacuum is the real selling point: with some, it holds so well it stays put even without a bra. But that same vacuum is also the weak point.
The failure points you keep reading in the reviews
Passive collectors go wrong in ways you only notice once you're wearing one. The same four come up again and again in mothers' accounts:
- The vacuum is fragile. With a Ladybug you see the complaint that the valve stops pulling a vacuum after the first use, which leaves it as nothing more than a simple drip dish you can't tilt anywhere.
- Full is dangerous. Let the collector get too full and the vacuum breaks and the whole thing falls off, contents and all. Some mothers report that a plain collector shell with no vacuum quietly held 50 to 70 ml, precisely because there was nothing to give way.
- You knock it loose. A baby who kicks, an arm that brushes past, a table edge you lean against: one nudge and the milk pours out.
- Bending empties it. A collector shell without a good vacuum empties the moment you lean forward to lay your baby down in the cot. That's exactly why mothers praise a model that does hold a vacuum: then you can move without spilling.
So a passive collector works well when you sit still and feed and empty it straight after. It isn't something you wear all day while you walk around the house.
Hygiene: caught milk can't sit there for hours
There's another reason a collector isn't an all-day staying-dry solution, and this one is about safety. The milk you catch sits warm against your skin. Breast milk kept warm at body temperature doesn't stay good for long, and milk that's been sitting in a dish against your breast isn't something you want to store. If you want to keep that milk, cool it or empty it promptly, ideally within the hour, and then put it in the fridge.
That means something important for your expectations. A collector is meant to catch milk you're going to store, during or just after a feed. It isn't meant for walking around with for hours so you stay dry, because then you waste the milk anyway and you take on a small hygiene risk. If you genuinely want to keep the milk you've caught, read how long breast milk keeps and when the clock starts in storing, thawing and safely transporting breast milk. If you only want to stay dry and the milk can go, you need something other than a collector.
Which one fits your situation? The decision guide
Now that you know the three products aim at different jobs, the choice gets simple. Answer one question: what are you trying to achieve? There are three branches and they lead to three different tools.
Branch 1: you want to build up a stash
If you're going back to work soon, or you want your partner to be able to give the odd bottle, you'll want to save some milk. Then a Haakaa is the handiest of the three, because it draws actively and gives you more per go. Put it on the breast you're not feeding from while your baby drinks on the other side and you catch the let-down along with it. Just mind the warning above: don't use it compulsively at every single feed, or you'll drive your supply up. A few times a day for your stash is fine. If you want to build up a serious stash, for exclusive pumping say, a proper pump is more comfortable and reliable in the long run than a silicone one.
Branch 2: you want to catch leaked milk while you feed
If you mainly leak on one side at the moment your baby drinks on the other, and you don't want to bin those drips, then a passive collector, a shell or a Ladybug, is the right choice. You catch what's coming out anyway, without pumping and without driving your supply up. Reckon on 40 to 75 ml a time, empty it promptly and put the milk somewhere cold. Choose a model that holds a vacuum if you move around while you feed, and accept that the vacuum is a weak spot: let it get too full or knock it against something and it pours out.
Branch 3: you just want to stay dry
And then the branch most mothers are actually in without realising. You don't need to keep the milk. You don't want wet rings on your top, a soaked bra, an awkward moment at work or over coffee. That isn't a collecting problem, it's an absorbing problem, and a collector is the wrong tool for it. Nursing pads do half of this job: plenty of mothers find they still leak past the edges. Which pads do hold and where they fall short is in nursing pads: which ones do you really need.
When staying dry is your only goal
If you're in branch 3, this is the insight that saves you money and hassle. Every loose collector shares the same failure pattern the moment staying dry is your only goal. They shift, they tip, they slide off, they need emptying, and they can topple when you turn over in bed. You buy a silicone thing to manage your leaking and you gain a new little chore: keeping it in place and emptying it in time.
We made our nursing bra for that staying-dry job. The absorbent layer is built into the cup, so there's no loose aid that can slide off or tip over. It catches up to 30 ml per cup, so 60 ml across the whole bra, keeping your top dry when you leak between feeds. It's wireless and knitted from a soft, giving fabric with a clip that opens one-handed, and it's made from an OEKO-TEX Class I certified fabric (certificate number 11-36224), the strictest category for textiles that may touch a baby's skin. It won't build up a stash for you, a pump does that, and it won't catch milk to store, a shell does that. It does the one job branch 3 is asking for: staying dry, with no loose thing that shifts. Have a look here: see the nursing bra with built-in absorbency. If you'd rather get your head around pumping, collecting and storing first, look in the overview of pumping, storing and work.
How much can you really catch safely, and how does the hygiene work?
Here are the plain numbers and rules together, because this is where expectations often go wrong:
- Passive collector (shell or Ladybug): reckon on around 40 to 75 ml a time. Don't let it get fuller than that, because when it's full the vacuum breaks and it falls off.
- Haakaa (pump with a vacuum): can climb to around 120 ml a feed, but that's pumping, with the supply effect that comes with it.
- Storing: if you want to keep the milk you've caught, cool it or empty it promptly, ideally within the hour, and put it at the back of the fridge. Milk that's sat warm against your skin for hours isn't for storing.
- Cleaning: rinse the collector after each use and clean it thoroughly as instructed. Silicone that touches your skin and your milk needs to be kept just as clean as the parts of a pump.
If you're unsure whether you really leak enough to need something, or so little that a collector gets you nothing, that's normal. One mother only discovered after buying that nothing came out of her collector, simply because a passive collector isn't a pump and draws nothing out of you. That isn't a fault, that's exactly how it's meant to work. If you leak a great deal and you're weighing up several aids side by side, read how to handle heavy leaking practically in managing heavy leaking: catching, absorbing or relieving.
When it's worth having a word
For most mothers, catching milk and staying dry is a matter of picking the right aid, not a medical problem. Even so, there are situations where you don't rely on a silicone cup but get in touch with a health professional:
- Your supply is getting out of hand. If you keep getting overfull, leak a lot and the milk sprays out with force while your baby chokes or gets fretful, talk it through with a lactation consultant. Topping up with pumping or collecting at every feed can drive it up rather than settle it.
- You're worried you don't have enough. If barely anything comes into your collector and you're unsure whether your baby is getting enough, don't go by what a collector gives you (it tells you nothing about that), and let your health visitor, midwife or a lactation consultant reassure you instead.
- A hard, painful patch in your breast that doesn't shift after a feed and a gentle massage. That can be a blocked duct. Keep an eye on it and carry on feeding on demand as normal, without trying to empty that side extra hard. If the patch doesn't shift, or a fever and a fluey feeling come with it, get in touch the same day, because a blocked duct can turn into mastitis.
- A red, warm, painful patch in your breast with a fever and a fluey feeling. That fits mastitis, and for that you call your GP the same day. It's separate from the collecting, but it belongs to the wider picture.
- Your nipples are broken, bleeding or look infected. Get those looked at before you carry on with any aid at all.
In the UK you can reach a lactation consultant through your midwife or your health visitor, who can refer you on to your local NHS infant feeding team or a nearby breastfeeding support group. Not every team has an IBCLC lactation consultant in it; if you'd like to see one, you can also find a private IBCLC through the Lactation Consultants of Great Britain directory. For everyday questions, the National Breastfeeding Helpline is staffed by trained counsellors. With a fever or a red, painful breast, your GP comes first, not a helpline; out of hours, use your out-of-hours GP service or NHS 111. No question is too small for a quick call.
Frequently asked questions about milk collectors
Is a Haakaa the same as a collector shell?
No. A Haakaa pulls a vacuum and actively draws milk out of your breast, so it works like a simple pump. A collector shell and a Ladybug only passively catch what leaks out on its own, without pulling. That's why a Haakaa gives you more, but it can drive your supply up if you use it at every feed.
How much milk will I catch with a collector shell or Ladybug?
Realistically reckon on around 40 to 75 ml a time, not the hundreds of millilitres you might expect. It's enough not to waste the leaked milk, not enough to save up a day's supply. Don't let the collector get too full, because then the vacuum breaks and it falls off, contents and all.
Can I wear a collector all day to stay dry?
You don't want to. A collector sits loose, it can tip over or slide off, and the milk sits warm against your skin, so you're best cooling or emptying it within the hour. For staying dry all day, nursing pads or a bra with built-in absorbency are what you want, because those absorb rather than gather.
Why is almost nothing coming out of my collector?
It's probably working exactly as it should. A passive collector draws nothing out of your breast, it only catches what leaks on its own through the let-down reflex. If you leak little on the side you're not feeding from, the collector stays nearly empty. That's not a fault. If you want to actively get milk out for a stash, you need a pump or a Haakaa.
Does collecting drive my milk supply up too?
Passive collecting with a shell or Ladybug doesn't drive your supply up to any real degree, because you're only gathering what's already leaking out. A Haakaa can, because it actively draws milk out with a vacuum. Use one at every feed and your body reads that as a sign more milk is needed.
Read on in this guide
- Storing, thawing and safely transporting breast milk
- Managing heavy leaking: catching, absorbing or relieving
- Nursing pads: which ones do you really need?
- Hand expression and antenatal expressing: how and when
- Everything on pumping, storing and work (the overview)
