Storage Wars

How To Keep Your Pantry Free of Creepy-Crawly Pests

Gross, but good to know.

February 19, 2021
Photo by Julia Gartland

Welcome to Storage Wars, a new series about the best ways to store, well, everything. From how to keep produce orderly in the fridge (or not), to ways to get your oddball nooks and crannies shipshape, and, yes, how to organize all those unwieldy containers once and for all—we've got you covered.


Allow me to paint you an upsetting word picture: I woke up one morning last spring to find that a mouse had entered the kitchen (bad) and managed to chew through a heavy-duty Ziploc bag, a large-sized Bee's Wrap, and parchment paper (worse) to gnaw at a loaf of sourdough bread that took me three days to make (the horror!). Reader, when I tell you I screamed.

While this scene could be rewritten into my “Why I’m Leaving New York'' essay, it instead has become the grounds for my—now even more militant than ever—approach to kitchen pest control. And also another item in the “pro” column for why I absolutely need to adopt a cat. I’ve actually always been extremely cautious about pests in the kitchen: It simply comes with the territory when you’re living with a poorly constructed rental kitchen in a prewar building, and work with food to boot. But even if critters aren’t a part of your daily life, you never know what’s lurking out of sight.

Pest control in the kitchen, particularly in the pantry, may take a bit of reorganization. Or, depending on your current setup, a lot of reshuffling. Is it necessary nonetheless? Without a doubt. If you’ve ever opened up a bag of flour to find it crawling with bugs or dealt with a similar mouse situation (I’m so sorry), you’ll heed this warning.


Check food for pests first

As soon as you bring home ingredients, particularly bags of flour or boxes of dry goods that are easy to sneak into, open them and peek inside to make sure the only stuff in there is what you bought—no uninvited guests. (It’s probably not going into your pantry, but make sure your produce is bug-free as well before storing all your fruit and veg). PS: Since you’re starting this process, I’d recommend you check open bags already in your pantry for any intruders, as well as seal up any holes in your physical pantry before moving on to the next step.


Transfer dry goods to airtight containers

Once you’ve opened bags or boxes, you’ve essentially unlocked the door to any critters looking for a cozy home. Transfer dry goods to a fleet of sturdy airtight containers—organized and pest-free, what could be better.


Store fresh produce you don’t want to refrigerate under a cloche

I know nothing’s cuter than a bowl of fresh fruit on the table (and the easiest way to ruin a perfect tomato is to put it in the fridge), so I have a solution. Though they may seem like a decor trend you don’t want to spend money on, a cloche is actually an ideal pest deterrent when you want to keep produce out at room temperature without attracting critters. Cake rarely lasts long enough in my kitchen to warrant the use of a cake stand, but I’ve taken to using the one I have (which has a lid) to store my tomatoes and peaches—which, let’s be honest, when in their prime are just as precious as a chocolate-frosted genoise.


Store other prepared or snack foods in lidded containers or bowls

You could store freshly baked cookies under a cloche, but I prefer to keep those (as well as other prepared foods that should stay at room temperature) in containers or bowls. If you’d prefer more air circulation, opt for a bread box. This is also where I store potatoes and onions. (All other produce is bought in small quantities and goes in the fridge, which is cool and dark enough for a couple days’ stay.)


Already dealing with critters? Try these:

Set up a fruit-fly catcher (& other traps)

Let’s focus on the rest of the kitchen—because the pantry isn’t the only place you might find pests. If you’re having issues with fruit flies, set up a bowl with apple cider vinegar and a bit of dish soap in the areas of the kitchen where you’re seeing bugs (see this post for the specifics). For ants, some suggest a mix of borax, sugar, and water (see this article for details)—though I tend to use those little traps you can buy at the hardware store. For mice, I avoid using sticky or snappy traps (I’ve tried “humane” ones that give you the option to release the critters, but I think the mice in my building are too smart for them); ultimately I’ve found nothing keeps mice away like not having food out in the open, nor stored in any packaging thin enough to chew through. Also, it’s clear that cats do genuinely help keep mice and other bugs at bay. (If my partner is reading this: We should really get a cat.)

Call in a professional

If you’re at your wit’s end and nothing seems to keep the pests at bay, I’d highly recommend calling in an exterminator to take a look. Hey, it’s cheaper than moving.

Join The Conversation

Top Comment:
“Boric Acid (BA) is your best friend against crawling insects large and small. If you have pets, read this: http://npic.orst.edu/factsheets/petspest.html My gramma mixed equal parts boric acid, cocoa and sugar, sprinkled it on the clean kitchen floor, left it overnight, then swept it up sweeping it towards the floorboards, ensuring some of it got behind the walls, then sweeping up the excess. You can use the same logic on your pantry shelves. Her reasoning was that the cocoa attracted them by scent, the sugar attracted them by taste and the boric acid killed them. My updated version is just boric acid (I sift it, to make the granules as small as possible) and it seems to work the same. Read from the link above, but essentially BA disrupts the bug's internal organs and/or drills through the exoskeleton killing them either way (they try to clean themselves of the powder, thus ingesting it). Cockroaches especially, learn not to cross the barrier -- which is why you want to sweep as much as you can to the floorboards. Mice don't like it either. If you live in an old house or apartment your best defence is to clean the pantry with a strong-smelling but benign solution, like white vinegar (don't use bleach, unless you plan to rinse the shelves too), then buy a lot of Cambro containers www.cambro.com/Products/food-storage/ in the sizes you need. Cambro is restaurant-quality storage with sturdy lids that are made to be stackable and compatible -- many different sizes all use the same size lid. You'll use them through several apartment moves and you can freeze in them too. Clean up any spills right away and rinse with a strong vinegar solution. I was able to rid a classic Japanese (i.e. porous) house of insects, mice and rats this way. You can too. As the author suggests, religiously inspect incoming staples for bugs. My method is to dump the staple in a Cambro container by itself, isolating the contents for about 10 days. Inspect through the clear sides. If you see movement, pitch the contents (I am lucky enough to compost it), and clean the container (outside if possible) thoroughly with hot, soapy water.”
— Barbara
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Rebecca Firkser is the assigning editor at Food52. She used to wear many hats in the food media world: food writer, editor, assistant food stylist, recipe tester (sometimes in the F52 test kitchen!), recipe developer. These days, you can keep your eye out for her monthly budget recipe column, Nickel & Dine. Rebecca tests all recipes with Diamond Crystal kosher salt. Follow her on Instagram @rebeccafirkser.

12 Comments

Medora V. July 23, 2022
I've lived in rural Maine most of my adult life, so mice have occupied the top position in my Most Wanted (most unwanted?) list. One of my most memorable mouse experiences was when I went in search of a large plastic bag of dried beans that had been in the back of a cupboard. What I found was the empty bag, still standing upright and occupying the same volume of space it had when I placed it there, complete with little bean-shaped bumps on the bag's surface. One neat hole at the base showed where a crafty rodent--and her extended family--had stealthily and systematically robbed me, bean by bean, over the period of a few days. I can laugh today about that perfectly-shaped bag with nothing in it; at the time, though, it didn't strike me as humorous.

I've shared my home with cats--sometimes as many as seven at a time--going back to my adolescence, but I fear I've never found them to be much of a deterrent to the mouse population. I suspect I'd have to starve them to shift their interest from the food that comes in a can to the food that comes on the hoof. I recall one cat napping on the kitchen floor and lazily opening one eye while a mouse walked in a leisurely way from one side of the room to the other, just inches from his whiskers. I don't claim to be a telepath, but I swear that cat was thinking, "How interesting. I'll have to note that when I journal tonight." One of my present-day cats actually is a competent mouser, but he brings me only "imported" mice (that is, from outdoors) and leaves me to deal with their "domestic" cousins.

Other than mice, pantry moths have been a nearly intractable problem. I've just attempted to moth-proof my cupboards by going to the effort and expense of moving every type of food item they've ever invaded to multiple OXO Pop containers. So far I'm enjoying their efficient use of space and the fact that everything looks so tidy and accessible. As for the moths, I'm crossing my fingers.

Hordes of mice and squadrons of pantry moths don't equal the ick factor of the cockroaches inhabiting the apartment in Spain where I once lived for a year. If climate change eventually brings roaches to my neck of the woods, I'm relocating to Nunavut.
 
Barbara July 23, 2022
Food grade diatomaceous earth [ https://www.google.com/search?q=diatomaceous+earthdiatomaceous+earth&rlz ] will help to cure your pantry ills. It looks like a fine powder but is actually finely ground ancient sea creatures. Insects and rodents get it on their bodies, and they bring it back to the nest. Once ingested (insects and rodents will lick it off to clean themselves) the ingested DE acts as teeny tiny swords that break the chitin exoskeleton and kills the insect. Food-grade DE does not harm your food, or you or your pets, including small mammals, birds, lizards, or snakes (we're all too big). It's not as effective in humid or wet environments.

Here's how I use it.

Step 1: Empty the panty one shelf at a time. Just empty what is manageable for you in an hour or two. Vacuum the shelf. Then, using a small sifter, tap an even layer of DE on the shelf, making sure the surface is covered. Using a whisk broom or other small broom, sweep the DE into the crevice between the wall and the shelf. Optional: wipe the shelf clean (I don't - everything is in a container anyway).

Step 2: Inspect the shelf contents for bugs and breaches. Pitch any food that has even a whisper of contamination. When in doubt, throw it out. (Or cook it and freeze it if you're so inclined. I've done that too.)

Step 3: Return food to the shelf in food-safe containers, heavy-duty plastic containers or restaurant containers (they are all state health department approved): https://www.cambro.com/Products/food-storage/

Alternate: You can also try removing the shelf contents, and cleaning the shelf and walls with a strong, astringent cleaner. Any cleaner will do it if you store your foodstuff in a container, and if you don't mind the strong ammonia or bleach smell. Once the shelf is dry use duck tape (not cello, not any other tape) to seal the gap between the wall and the shelf. Handier people can seal it with clear or color-matching caulk or a silicone sealer. Just be generous -- don't err on the side of "pretty" rather than SEALED.
I would still urge you to use food storage containers designed for restaurants. Cambro is a tried and true brand: https://www.cambro.com/Products/food-storage/

 
Medora V. July 24, 2022
A very comprehensive and detailed process! I will file this away future reference.
 
Terry B. July 22, 2022
Unfortunately, I bought a little bag, 2 lb, of organic flour when the pandemic hit and flour was scarce. It sat on my counter for a few days and when I went to open it, grain beetles went scurrying everywhere. Everywhere. 2+ years later and we're still finding the occasional beetle. Husband didn't put the package of graham crackers in a ziploc and when I went to have one, not only was it soggy, it had beetles in the pack. I couldn't make a meal without cleaning pots because they were inside my pots, inside my baking pans, in the coffee water, in the butter. We've found them crawling in the bathroom. We called Orkin, but because they're in cupboards and on the counters, he wouldn’t spray. He gave us a stack of sticky traps. We've caught a few, my pots catch more. Gross. I'm wondering if we'll ever be rid of them. Oh yeah, almost forgot. The beetles got into all my flour containers on the counter. Not airtight as I thought, and my sourdough starter on the counter was ruined. I had no backup starter in the fridge. *sigh* My flour goes from store to freezer now. New containers that are definitely airtight. I've always used ziplock bags to store, why hubs didn't that time is beyond me.
 
Lori April 19, 2021
After it taking a year to get rid of pantry moths, I can tell you that a lot of containers that are claimed to be airtight are not. If planning to store flours and grains in an airtight container, run the water test on it first. If you need to buy airtight containers, Google “best airtight containers” and follow the advice of a professional review sight. I find it interesting that pantry moths infested almost every inch of my pantry, but left the white flour alone. I guess even they know white flour is bad for you. 😄
 
Ruth April 19, 2021
Freeze flour and other grains for a couple of days before storing in the pantry. Be aware that whole grain flour is a more attractive home for pests; buy it in smaller quantities or store most of it in the freezer and a small amount in the pantry. With regard to mice, they're nocturnal, and they're coming from somewhere. Find the somewhere--in our case, a small opening near the floor of a hall closet--and stuff steel wool into it.
 
Barbara February 28, 2021
Boric Acid (BA) is your best friend against crawling insects large and small. If you have pets, read this: http://npic.orst.edu/factsheets/petspest.html My gramma mixed equal parts boric acid, cocoa and sugar, sprinkled it on the clean kitchen floor, left it overnight, then swept it up sweeping it towards the floorboards, ensuring some of it got behind the walls, then sweeping up the excess. You can use the same logic on your pantry shelves.

Her reasoning was that the cocoa attracted them by scent, the sugar attracted them by taste and the boric acid killed them. My updated version is just boric acid (I sift it, to make the granules as small as possible) and it seems to work the same. Read from the link above, but essentially BA disrupts the bug's internal organs and/or drills through the exoskeleton killing them either way (they try to clean themselves of the powder, thus ingesting it). Cockroaches especially, learn not to cross the barrier -- which is why you want to sweep as much as you can to the floorboards. Mice don't like it either. If you live in an old house or apartment your best defence is to clean the pantry with a strong-smelling but benign solution, like white vinegar (don't use bleach, unless you plan to rinse the shelves too), then buy a lot of Cambro containers www.cambro.com/Products/food-storage/ in the sizes you need. Cambro is restaurant-quality storage with sturdy lids that are made to be stackable and compatible -- many different sizes all use the same size lid. You'll use them through several apartment moves and you can freeze in them too. Clean up any spills right away and rinse with a strong vinegar solution. I was able to rid a classic Japanese (i.e. porous) house of insects, mice and rats this way. You can too.

As the author suggests, religiously inspect incoming staples for bugs. My method is to dump the staple in a Cambro container by itself, isolating the contents for about 10 days. Inspect through the clear sides. If you see movement, pitch the contents (I am lucky enough to compost it), and clean the container (outside if possible) thoroughly with hot, soapy water.
 
Barbara April 19, 2021
Food grade diatomaceous earth is also a non-poisonous alternative pest control.
 
Whitney February 28, 2021
The most significant invader to me is the weevil! It really deserved two paragraphs of discussion... grin! Once they invade even one box of pasta they will immediately travel two packages of flour cereal grain or rice. If this happens, you are doomed. I’ve only had this vision twice in all my years, so I am constantly in stealth mode in terms of repackaging. I have actually seen these weevils in sealed cellophane bags of imported/domestic pasta! If not in sealed plastic bags, they literally spread from one package to the other. Pasta packaged in boxes is its favorite meal!
 
Smaug February 20, 2021
Sounds more like a rat.
 
M February 19, 2021
1- If you live in a multi-unit dwelling, you won't be able to fully control pests in your unit, so impenetrable food storage is a must.
1a- If you get a problem that removing food doesn't fix, get your building involved. A professional spraying will do what traps cannot. Especially ants - if tiny ants are a reality in your building, you need pest control. No DIY will work when they're in the walls and other units.
2- NEVER store bulk food items in anything but sealed containers. They are one of the quickest ways to get things like meal moths that will destroy all of your food. And label where bulk food comes from so you can see if infested dry goods are all from the same source.
3- Traps for insects are very often a waste of money, and often do little more than lowering the number of bugs present.
 
mzel0145 February 21, 2021
When I moved into my last condo apartment in Manhattan I saw a few bugs in my first week, and I sprayed thinking they were under control.
Trash was to be left at a common area in the back doors’ halls.
Unaware of a roach swam blanketing the other side of the door— a horror equal to a fright movie!
I filled an empty plastic ketchup bottle — the kind you se