I’ve previously shared the Good News about mosquito dunks, which stop mosquitoes from being able to breed in standing water. For the fourth year running, I am using dunks to create what’s sometimes called a “mosquito bucket of doom” or a "mosquito death bucket"—a trap that entices mosquitoes to breed in standing water that you have (muahahaha) poisoned against them.

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Not only is a mosquito bucket easy to create—it took about five minutes, and my elementary-aged daughter did most of the work—it’s also more effective than other mosquito control attempts, like mosquito foggers.

Why a mosquito bucket is more effective than other types of mosquito management

There are three main ways of dealing with a mosquito problem in your yard:

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- Keep the mosquitoes away from you personally, with box fans, bug spray, and barriers like screening. They’re still out there, but at least they aren’t biting you.

- Kill adult mosquitoes, for example with foggers. Those individual mosquitoes won’t be able to bite anymore, since they’re dead, but the small amount you’ve managed to kill is not much of a dent in the mosquito population. This is the least effective strategy.

- Kill larvae or interfere with breeding. Removing sources of standing water is the first step. To take it further, eliminate breeding sites in your yard, except for the bucket trap I'm about to describe. The bucket will kill the baby mosquitoes before they can grow up.

The first and third options are the ones that will make a difference: box fans and bug spray for yourself, mosquito breeding control for your yard. If you’re interested in trying to kill adult mosquitoes, read up on adulticides. They can be toxic to other insects like bees. They also don't tend to help mosquito problems unless you can manage to kill a lot of the adult mosquitoes, which can be difficult and expensive.

The bucket of doom is an easy and effective form of breeding control, but be aware that it works best in places where there aren’t other breeding sites for the mosquitoes. If you live next door to a swamp, the bucket may not help much. On the other hand, if you’re in a place where you and your neighbors are good about cleaning up stagnant water, the bucket will be more effective.

How a mosquito bucket works

First, you need to understand the mosquito life cycle. There are different species, with different preferences about who to bite and where to breed, but the same basic facts apply.

Just as butterflies have a larval stage (the caterpillar), mosquitoes also have a larval stage and an adult flying stage. Females lay their eggs in or near water, and the larvae are aquatic. If you’ve ever looked into a bucket or pond and noticed wriggling wormy things near the surface, those were mosquito larvae. They hang upside down, breathing through a tube in their butts (I promise I am not making this up) but can swim around to hide or to look for microscopic bits of food to eat.

They pupate (like caterpillars) and emerge from the water as adult mosquitoes. Male and female adults drink flower nectar (!!!) which is enough to keep them alive, but when a female is ready to breed, she needs protein. That’s where the biting comes in. She needs a “blood meal” to be able to build those little baby mosquito eggs. So she bites you, drinks a drop of your blood, and then a few days later she lays her eggs. Then the cycle can begin again.

The entire life cycle only takes a few weeks, so mosquitoes will breed (and bite) continuously all season. We’re going to disrupt this process by poisoning the water that the larvae live in. The eggs will hatch, but the larvae will die.

Is a mosquito bucket safe?

One of the things I love about the bucket of doom is that it targets mosquitoes and doesn’t affect most other insects, nor people and animals. The “poison” that we’re using is actually just a naturally occurring bacterium with the scientific name Bacillus thuringiensis israelensis (often abbreviated Bti). This type of bacteria makes a toxin that can kill mosquitoes, fungus gnats, and blackflies, but Bti is nontoxic to mammals, birds, and fish. Insects that don’t breed in water aren’t affected by dunks, so butterflies and bees are safe.

A bucket of water can be a safety hazard for small children and for animals, just because they could fall into it and drown. If your bucket is in an area where children, pets, or wildlife could access it, consider covering the bucket with a barrier. Chicken wire makes an easy DIY cover, but if you want something a little neater looking, use a hydroponic basket that snaps onto the top of the bucket.

What do you think so far?

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Set Up This 'Mosquito Death Bucket' Now