The Boon Trove milk collector is the single product I credit with building my entire 200oz freezer stash, and it’s the one thing I now gift at every baby shower I’m invited to.

So let me tell you a quick story about how I even found out these existed.

I Opened These at My Baby Shower and Had No Idea What They Were

I have a vivid memory of opening these up at my baby shower, looking up to the Mom who gifted them to me and asked what they were, since I obviously didn’t add them to my registry?

She explained it to the entire shower: when you nurse on one side, your other breast lets down at the same time and leaks milk. These sit in your bra and catch every drop of it. Milk that would otherwise just soak into a nursing pad and get thrown in the trash.

I smiled and noted this in the very very back of my brain. I did not fully get it yet. And then I had my baby, started nursing, and within days I understood why that mom gifted them with such confidence. These ended up being my most-used, most-loved nursing product of my entire breastfeeding journey. (I cover all of them in my full breastfeeding essentials guide if you want the whole lineup.)

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How Breastfeeding Letdowns Actually Work

If you’re newly pregnant or brand new to nursing, here’s the thing nobody really explains clearly.

Your breasts work as a team. When your baby latches on one side and triggers your letdown, your other side usually lets down too. That second side isn’t being nursed (unless you have twins), so all that milk just… comes out. Into your bra. Into a nursing pad. Gone.

The Boon Trove sits in your bra on that second side and collects it. That’s the whole magic. You’re not having to sit around pumping. You’re not doing anything extra. You’re just capturing milk your body was already releasing while you feed your baby on the other side.

What I Loved (and What I Didn’t)

What I loved

• It fits discreetly in your bra. This is the big one. It’s flat and round and small enough that I could wear it under a normal shirt, even nursing in public, and nobody knew.
• It has ounce markings. You can see exactly how much you’ve collected (1, 2, 3 oz right on the side). I loved having that visual, so you could tell before you even added it to a bottle.
• Suction is optional. You can suction it on for a little extra pull, or just rest it against your breast to passively catch the letdown. Both work, it just depends on your goals that session.
• It reduces how much you have to pump. I am all about efficiency, but I never want to cut corners. This let me build a stash without chaining myself to a pump.
• The poor spout works well. You can fold the collectors a bit so that it creates a pathway for the milk to come out when you’re pouring it. It doesn’t drip and has the sharp pour vs. a messy pour, if that makes sense. It’s easy to pour into milk baggies or bottles alike, without any sloppy spillage.

What I didn’t love

• If you’re a heavy oversupplier, it can overflow. It holds up to 3 ounces. Reviewers who produce a ton mention that if you don’t empty it mid-feed, it can spill when you take it off. Not a dealbreaker, just something to know if you’re a big producer.
• Not incredibly secure and it’s full of milk, if you set it down standing up, it could tip over easily if you bumped it.

Boon Trove vs. The Haakaa vs. The Haakaa Ladybug

Okay, let’s talk about the alternatives, because I was gifted a few of these and this is where my strong opinions come out, and why I’m a Boon Trove ride or die fan.

The Regular Haakaa

Some moms absolutely swear by the classic Haakaa, and I respect that. It just was not for me. It’s too big and too bulky. There is no world in which I’m putting that thing on in public while nursing. To use it, your whole boob is out, which is fine at home and a no-go anywhere else.

It does have suction and measurement markings on the back. But the Boon Trove also has suction (you just squeeze it, place it on your nipple, and it slowly pulls), so for me the size difference made the Trove the clear winner.

The regular Haakaa can collect up to 5(ish) oz. For me though, using a manual suction like a pump, I’ve personally never gotten more than 3 oz, but this is just my body. The other thing that I do like about Haakaa is that it has a suction cup on the bottom of the product, which allows for you to suction it to a countertop if you’re grabbing bags, bottles etc., so if you accidentally bump it, it’s not tipping over.

The Haakaa Ladybug

Haakaa did make a smaller, Trove-style version called the Ladybug, and on paper it’s the closest competitor. It’s actually a touch smaller than the Trove. But I have a few things to gripe about.

1. The opening is an oval shape. My nipples are not oval. A friend of mine used the Ladybug and got welts from it, which I think comes down to that shape and fit. I will be testing it with this baby in a month, so I’ll report back, who knows, I might love it.
2. There’s no ounce collection marking. You can’t easily see how much milk you’ve collected, which after using the Trove felt like a real downgrade.

So between the three: the regular Haakaa is too bulky, the Ladybug has a fit and visibility problem for me, and the Boon Trove hits the sweet spot. Discreet, comfortable, suction optional, and you can actually see what you’re collecting.

What Other Moms Are Saying

I’m not the only one obsessed. Scrolling the reviews, the same themes come up again and again.

A ton of moms mention that it actually stays put in your bra instead of getting knocked off the way a Haakaa does. One reviewer said she’s even fallen asleep with it on. I’ve done this too, but just be careful you don’t sleep with it too long because it is a suction, and can cause a hicky type response if left on too long.

Several specifically call out the gentler suction compared to the Haakaa, and undersuppliers mention it helps them grab an extra ounce to add to a later bottle. The measuring lines come up constantly as a favorite detail, same as mine.

The one consistent negative, again, is from heavy overproducers who note it can overflow if they don’t empty it mid-feed. So the internet and I are in agreement across the board.

Why It’s the Best Baby Shower Gift, Hands Down

If you’re building a registry or shopping for a pregnant friend who’s planning to breastfeed, add this. They’re typically under $30, which makes them an incredibly giftable price point, and the value is wildly disproportionate to the cost. You’re potentially helping someone build an entire freezer stash for the price of a nice candle.

This is something many moms-to-be don’t know exist, and that’s why it’s one of my favorite gifts. It’s probably not on the registry, but it’s an incredibly utilized product.

It’s the gift that made me go “wait, what is this?” at my own shower and then became the thing I cannot stop recommending. Full circle.

If you’re shopping for the best nursing product on the market, especially when it comes to breastfeeding and building a stash without living on a pump, this is it.

Where to buy: Boon Trove on Amazon | ~$26

How I Built a 200oz Freezer Stash With These

I had over 200oz of frozen milk in my freezer at any given time for an entire year. People always ask how, like I had some secret pumping schedule or supplement protocol. There wasn’t.

It was a brick by boring brick collection.

Every single nursing session, I’d nurse on one side and pop a Boon Trove in my bra on the other. Depending on the time of day, I’d collect anywhere from a quarter ounce to a full 3 ounces per feed. By itself, a quarter ounce feels like nothing. But you do that every feed, every day, for months, and it adds up to a freezer that never ran dry.

It is not exciting. It is not a hack. It is just consistency, drop by drop. But that boring consistency is exactly why it worked.

My Daytime vs. Nighttime Collection System

Here’s a little nuance I personally followed, and it’s one of my favorite facts about breast milk.

Your milk actually changes depending on when you make it. Daytime milk has more cortisol in it, the hormone that helps keep your baby (and yourself) alert and active. Nighttime milk has more melatonin, which helps your baby sleep. Your body is basically sending your baby a tiny message about what time of day it is through your milk. How cool is that?

So I kept my stash organized by time. Anything I collected between roughly 5am and 7pm went into my “daytime” milk. Anything from 7pm to 5am went into my “nighttime” milk. Then I’d try to feed it back to my baby in the matching window when I could. I just wrote either AM or PM on the milk collection baggies to indicate time of day. Some bags actually have a sun or a moon with a checkbox text to them so you can simply use that too.

I want to be clear, this is the system I used because it worked for me and my family. It is not a rule, and your baby will be completely fine if your milk gets mixed up. But if you’re a system person like me, it’s a helpful way to organize your stash and lean into what your body is already doing.

My Pour, Combine, and Refrigerate Routine

We are a glass over plastics family in this house, so my routine was built around that. Microplastics are a whole different conversation, but I just felt better keeping my milk in glass whenever possible.

Here’s exactly what I did:

1. Collect milk in the Boon Trove during a feed.
2. Pour it into 1 glass storage bottle in the fridge.
   • I personally love Pigeon bottles. They’re a bit on the spendy side, but they were recommended by my lactation consultant.
3. During my next feeding, I’d add to a different storage bottle, let the link cool, then pour into the original bottle. (warm milk + cold milk shouldn’t mix as a best practice, but you can combine them after they’re both the same temperature)
4. Ffreeze once I had a good amount built up.

One thing to know: combined breast milk can stay in your refrigerator for about 3 days. So you have a nice window to keep adding to the same bottle before you need to freeze it or use it. Just try to combine milk that’s a similar temperature, and store it toward the back of the fridge, not in the door, where the temp is most stable.

The 2-pack was perfect for this. One in use, one clean and dry and ready to go.

Links to All The Products Mentioned

Amazon Store Front Of All My BreastFeeding Essentials:

Boon Trove Milk Collectors On Amazon | ~ $26
Haaka Classic Milk Collector On Amazon | ~ 15
Haakaa Lady Bug Milk Collectors On Amazon | ~ 33
Pigeon Bottles On Amazon | ~ $35
Flat Lids For Bottles On Amazon | ~ 8

Did I miss anything? Drop a comment below, I read every single one. And if you’re deep in registry-building mode, go check out my full breastfeeding essentials list for everything else that made a year of nursing doable for me.

Disclosure: This is a review blog which may get compensated for the products reviewed by the companies who produce them. All of the products are tested thoroughly and I only endorse products I believe in. I am an independent blogger and the reviews are done based on my own opinions.