Skip to Content

How To Use Beer Traps to Catch Slugs – & The Big Mistake to Avoid

If you’ve got slugs, one of the best ways to get rid of them is to open up a bar. Yes, it appears that, like many of us, after working hard in the garden all day, slugs also appreciate a beer. Slug traps that employ this bubbly beverage are cheap, easy to set up and maintain, and more importantly – effective.

The Basics

The idea is simple, and gardeners have been employing it for ages. You place a small container filled with beer in your garden. The slugs are attracted to the beer, fall in and drown, happily slurping up the golden brew. Not a bad way to go for a slug, I guess.

Like many things in the garden, simplicity gets the job done. But if you don’t do it right, you won’t get the results you’re looking for. So, I’ll help you avoid a common pitfall and give you a couple of tips for using these traps for a slug-free summer.

A Common Mistake to Avoid

These simple traps work remarkably well if used correctly. Unfortunately, a common mistake has led some gardeners to believe that the traps don’t work or even exacerbate the problem, and this proves true if you don’t set the traps up right.

The key to success when placing your slug beer traps is to put them away from the plants you’re trying to protect.  

Mistakenly, gardeners will set up traps where they see the slugs – near the veggies they want to protect. While this might lure away the ones already on your plants, the smell of the beer will also lure in more slugs to the very plants you’re trying to keep slug-free, making the problem worse.

Lettuce covered in slugs

Instead, it’s best to place slug traps away from the vegetables you wish to protect.

Veteran gardeners are probably chuckling right about now, realizing this can be tricky. The list of vegetables slugs don’t eat is short, making it hard to find a good spot for slug traps, especially in smaller gardens.  

For the most part, slugs prefer tender vegetables, such as lettuce and brassicas, like spinach, kale, cabbage, etc. They love the young leaves and fruit of cucumbers, tomatoes, squash, etc. So, finding a zone where you want to lure slugs in your garden can be difficult.

Setting Up Your Trap

Bubbling beer in a slug beer trap

Setting up several traps around the periphery of the garden seems to work best. As we all know, some years are better or worse than others for slug populations. I’ve found it’s best to get traps set up early and profusely. Then, depending on how many drowned slugs I find in the spring, I can add or take away traps.

For the best results, dig a hole for the containers so they are flush with the ground. You’ll be less likely to kick them over, and it makes it easier for the slugs to find them. You can use tin cans, plastic bottles with the tops cut off or other empty food containers. If you can find something that has a bit of a lip, it makes it easier to prise it back up out of the ground to dump the trap.

The Best Beer?

Obviously, you don’t want to use your fancy craft brews here. Otherwise, you’ll find flannel-wearing hipsters sipping out of your traps in the morning, and they’re harder to get rid of than slugs.

Tall glass of Axemann Brewery High Gear Chocolate Coffee Porter
It appears that, like me, slugs like a nice dark beer.

Choose something cheap and dark, like a lager or an ale. If you can find a cheap brown ale, that’s even better. Darker beers tend to give off a stronger yeasty or malty smell, and the scent lasts longer than, say, a pilsner or a pale ale.

Of the slugs I interviewed for this article, most agreed that they avoid traps with IPAs as the whole IPA thing is a bit overdone, and they wish beer makers would move on to something else already.

All the slugs agreed, however, that freshness is key, which leads me to my final point.

Maintaining the Slug Traps

For slug traps to work continuously, they need to be maintained continuously. Clearly, if the trap is filled with dead slugs, live slugs will avoid it. Also, if it has rained, the trap will stop working.

Check the traps each time you head out to the garden.

Dump out and refill traps that have a lot of slugs in them. Dump the traps and refill them with fresh beer after it rains. It’s a good idea to put in fresh beer every three days so the scent remains strong to attract slugs.

And that’s all there really is to these simple slug traps.

If you set up your traps away from the veg you want to protect, and you’re diligent about emptying and topping them off with fresh beer, you’ll find these traps immensely useful in the defense of your garden. Don’t forget to set aside a couple of those beers to enjoy after a long afternoon spent working in the garden. The slugs don’t have to be the only ones enjoying a beer in your garden this summer.  

For more slug-busting ideas:




Get the famous Rural Sprout newsletter delivered to your inbox.

Including Sunday musings from our editor, Tracey, as well as “What’s Up Wednesday” our roundup of what’s in season and new article updates and alerts.

We respect your email privacy


Tracey Besemer

Hey there, my name is Tracey. I’m the editor-in-chief here at Rural Sprout.

Many of our readers already know me from our popular Sunday newsletters. (You are signed up for our newsletters, right?) Each Sunday, I send a friendly missive from my neck of the woods in Pennsylvania. It’s a bit like sitting on the front porch with a friend, discussing our gardens over a cup of tea.

Originally from upstate NY, I’m now an honorary Pennsylvanian, having lived here for the past 18 years.

I grew up spending weekends on my dad’s off-the-grid homestead, where I spent much of my childhood roaming the woods and getting my hands dirty.

I learned how to do things most little kids haven’t done in over a century.

Whether it was pressing apples in the fall for homemade cider, trudging through the early spring snows of upstate NY to tap trees for maple syrup, or canning everything that grew in the garden in the summer - there were always new adventures with each season.

As an adult, I continue to draw on the skills I learned as a kid. I love my Wi-Fi and knowing pizza is only a phone call away. And I’m okay with never revisiting the adventure that is using an outhouse in the middle of January.

These days, I tend to be almost a homesteader.

I take an eclectic approach to homesteading, utilizing modern convenience where I want and choosing the rustic ways of my childhood as they suit me.

I’m a firm believer in self-sufficiency, no matter where you live, and the power and pride that comes from doing something for yourself.

I’ve always had a garden, even when the only space available was the roof of my apartment building. I’ve been knitting since age seven, and I spin and dye my own wool as well. If you can ferment it, it’s probably in my pantry or on my kitchen counter. And I can’t go more than a few days without a trip into the woods looking for mushrooms, edible plants, or the sound of the wind in the trees.

You can follow my personal (crazy) homesteading adventures on Almost a Homesteader and Instagram as @aahomesteader.

Peace, love, and dirt under your nails,

Tracey
[simple-author-box]