Updated July 2023
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BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. Read more  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.Read more 
Bottom line
Best of the Best
Spectracide Pro Aerosol Wasp & Hornet Killer
Pro Aerosol Wasp & Hornet Killer
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Most Comprehensive
Bottom Line

An effective spray for wasps that continues working after you spray.


Sprays up to 20 feet and kills wasps quickly. Also prevents wasps and hornets from returning for up to 4 weeks. Easily kills entire nests of wasps.


A little pricier than other wasp sprays.

Best Bang for the Buck
Raid Wasp & Hornet Killer
Wasp & Hornet Killer
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Trusted Brand
Bottom Line

A 2-pack of insecticide that kills immediately and can handle an entire nest.


Comes with 2 14-ounce cans of spray. Liquid can reach 22-feet away. Attacks the nest and exterminates wasps on contact. Will not conduct electricity under 32,500 volts. Works on yellow jackets, paper wasps, bald-face hornets, and mud daubers.


Toxic to fish and should not be sprayed near water.

Ortho Home Defense Hornet & Wasp Killer
Home Defense Hornet & Wasp Killer
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Foam Spray
Bottom Line

It's effective on wasps and keeps them away.


Foam sprays up to 20 feet and kills wasps immediately. Also kills wasps that come back to the nest after spraying. Easy to spray small areas accurately.


Doesn't reach the full 20 feet if there is any breeze.

Syngenta DemonMax Insecticide
DemonMax Insecticide
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Concentrated Formula
Bottom Line

Professional-grade spray that effectively kills wasps and keeps them away.


Makes up to 32 gallons of spray, so the bottle lasts a long time. Protects against wasps for a long time after spraying. Does not go into water supplies.


Has a strong smell and doesn't kill wasps immediately.

Syngenta Demand CS 8oz General Insecticide
Demand CS 8oz General Insecticide
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Bottom Line

A professional-grade insecticide that works well against wasps.


Great for indoor and outdoor use and keeps wasps away for several weeks after spraying. The concentrated formula needs to be diluted and lasts a long time.


Some buyers received bottles that were leaking.


We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

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Buying guide for best wasp sprays

Like many people who care about the environment, you might be on a mission to save bees. However, not all insects that fly and buzz are the same. Although closely related to bees, wasps are more dangerous and aggressive. That’s why it may be necessary to kill them and their nests when they get too close to humans. A wasp spray makes it easy to accomplish this task.

Wasp spray is made with insecticides that kill these insects quickly. It can be used on individual wasps but is commonly applied to nests to destroy the whole colony. Many wasp sprays are also used to kill hornets, yellow jackets and other types of wasps and insects. 

Whether a nest is in the ground or built in eaves, trees or shrubs, a residential wasp spray like our favorite, Spectracide Pro Wasp and Hornet Killer, comes in a can that sprays 20 feet or more. This makes it possible to stand at a safe distance while applying it. If you need a spray for a persistent wasp problem or professional-level applications, a concentrated commercial formula might be best. 

Our list: The best wasp sprays

Spectracide PRO Wasp and Hornet Killer

Spectracide’s wasp and hornet spray earns our top spot for being highly effective at killing wasps, hornets, yellow jackets and more while providing lasting protection. Formulated with a combination of quality pesticides, it comes in a generous 18-ounce can with a nozzle that sends the product up to 20 feet. This is a good distance for safely eliminating entire nests. After spraying a wasp nest, the last thing you want is for the pests to return. This spray alleviates that concern by keeping them away for at least four weeks. And because it easily kills whole nests, it’s a great product for major pest problems. 

Raid Wasp and Hornet Killer

This wasp and hornet spray is made by a brand you probably already know and trust. Raid has earned a reputation for making insecticides that reliably kill all types of crawling and flying pests. This spray targets different types of wasps, hornets, mud daubers and yellow jackets. It kills them quickly and eliminates whole nests. The spray can reach 22 feet, so you can take out pests and their homes without getting too close. And if getting a good deal is one of your goals, you’ll appreciate this product’s reasonable cost and unbeatable value. That’s because it includes two 14-ounce cans for an appealing price.

Ortho Home Defense Hornet and Wasp Killer

This Ortho hornet and wasp spray has a foamy consistency that reaches up to 20 feet to cover and trap wasps, resulting in their demise. Wasps that return to the nest are killed once they encounter the dense foam too. The nozzle dispenses the foam in a precise pinpoint pattern, so it’s a good choice for nests located in hard to reach areas. This product is also effective at killing hornets, yellow jackets and mud daubers. The 16-ounce can comes at an appealing price. 

Syngenta Demon Max Insecticide

This Syngenta product is a concentrated, commercial-grade insecticide that’s mixed with water to create a spray. The 16-ounce bottle makes up to 32 gallons of spray, which is ideal for consumers who need more than just one can of standard wasp spray. The powerful insecticides kill on contact, so it’s also the perfect pick for major pest problems. This versatile product kills 30 other types of insects, including termites, and provides lasting protection against future infestations in treated areas. Unlike many other wasp sprays, it can also be applied in some cracks and crevices in indoor areas when used as directed. 

Syngenta Demand CS General Insecticide 

The Syngenta Demand CS insecticide is another versatile concentrated product that can be used to kill numerous types of pests. In addition to wasps and hornets, it can eliminate fleas, flies, ticks, ants and more. Another selling point is that this commercial-grade formula can be used in certain areas inside the home. However, it’s important to always follow the instructions to use the product safely. Mixed with water, one 8-ounce bottle can make 40 gallons of spray, making this a solid value for any consumer who needs to use a wasp spray frequently. 

Black Flag Foaming Wasp and Hornet Killer

This foaming Black Flag wasp and hornet spray will give you confidence that it will do its job. It’s made by a top brand in pest killers and formulated with powerful pesticides that kill wasps, hornets, spiders, ants and more in seconds. In addition to killing pests quickly, the thick consistency of this foam traps them too. It also lingers to eliminate wasps that return to the nest. What’s more, the spray leaves the 14-ounce can at a force that sends it 20 feet, so you don’t have to get close to the stinging pests. If you aren’t happy with the performance of this wasp spray, you can take advantage of the money-back guarantee offered by the manufacturer. 

BASF PT Wasp-Freeze II Wasp and Hornet Insecticide

BASF PT Wasp-Freeze II insecticide is formulated with powerful ingredients that kill pests on contact as well as whole nests quickly and effectively. It also continues to kill wasps and hornets that return to the nest for several days after application. This aerosol spray reaches targets up to 15 feet away. The 17.5-ounce can contains enough spray to go a long way toward eliminating stubborn wasp and hornet nests. 

What to know before you buy wasp spray

How wasp and hornet spray works

Wasp spray is formulated with pesticides that target the nervous system of the flying pests to kill them quickly and effectively. Natural pyrethrins derived from chrysanthemum plants and synthetic pyrethroids made from chemicals are the two most popular categories of pesticides used to make these sprays. 

Wasp spray is commonly used on nests to kill entire colonies. However, some residential formulas can also be used to spray the occasional single intruder in your outdoor living space. While most of these sprays are marketed to kill wasps and hornets, some are effective at killing other flying pests. Keep in mind that hornets and yellow jackets are also wasps, and the terms are often used interchangeably.

Residential vs. commercial wasp sprays

An important consideration when shopping for wasp spray is how the spray is sold. You can purchase residential versions that are ready to use or commercial versions that come in concentrated form.

Residential: This type of wasp and hornet spray comes ready to use without any mixing or additional containers. This is the easiest option to use and the most readily available. It typically comes in an aerosol spray can with a trigger on the top. Although liquid is the most popular form, foam pesticides are also available. Some people prefer foam because it’s easier to see than a clear liquid. Foam also traps the insects against the nest. Standard formulas are powerful enough to eliminate most wasp problems. However, there are sprays with higher concentrations of pesticide chemicals available. These are the best options for larger nests or recurring colonies of wasps and hornets. 

Wasp spray is easy to use. When you press the trigger button, it ejects the spray through a narrow nozzle. This design allows you to spray the chemical accurately over some distance, which should be printed on the can. The farther away you can stand from the wasps, the safer you’ll be.

Commercial: Commercial sprays ship in a concentrated form in a large bottle. You mix the concentrated liquid chemicals with water to create the wasp spray. You must provide the spraying mechanism when using this product. Some commercial sprays use cypermethrin to kill wasps, which works more quickly than the chemicals in residential sprays. It keeps other wasps away from the area for a longer period too.

Indoor vs. outdoor

Most wasp sprays are made to use outdoors and shouldn’t be sprayed indoors. However, some formulas are safe to use indoors, especially concentrated commercial products. To be safe, always read the instructions carefully before using any wasp spray indoors. Never use one inside that’s only intended for outdoor use. 


Quantity: Pay attention to the amount of spray contained in the aerosol can. Some cans may contain 12 or 14 ounces while others hold up to 20 ounces. If you’re interested in comparing prices accurately, do the math and figure out the cost per ounce.

Reach: Wasps are aggressive, so it’s safest to stand as far as possible from them when spraying a nest. Fortunately most cans of wasp spray are designed to reach a distance of 20 feet or more. 


Spraying a wasp or hornet nest won’t necessarily kill all the insects that live in it. That’s why it’s important that you choose a wasp spray that’s potent enough to linger and kill the pests that return to the nest later. Most brands are formulated to do this with a consistency and chemicals that produce a residue that continues to kill wasps and hornets for hours or days after application. 


  • Follow the instructions on the product. Even if you’ve used wasp spray before, don’t assume the directions on the new can are the same. Always read the instructions and safety precautions carefully before use. Some wasp sprays can stain clothing, kill plants or contaminate water in the area, while others are safe to use anywhere outdoors. Check the instructions on the can to make sure it’s nonstaining and safe to use around plants if this is a concern.
  • Wear protective clothing. Before using a wasp spray, cover as much of your exposed skin as possible. If you’re eliminating a large nest, you might want to invest in safety gear similar to what a beekeeper wears. No spray can be delivered perfectly every time. Even when working from 20 feet away, you could be stung. Always be on the alert for insects that move before the spray strikes them, because they may attack you.
  • Saturate the nest. Try to strike the nest with as much spray as you safely can. Wasp spray not only kills wasps on contact but also keeps other wasps away from the area. Wasps that survive the initial spraying won’t return to a saturated nest.
  • Don’t use wasp spray for other purposes. Some people might recommend using wasp spray for self-defense instead of pepper spray. However, wasp spray is not proven to be effective against humans. It also could be illegal to use wasp spray on humans.


Q. How much does wasp spray cost? 

A. Residential wasp spray in cans is quite affordable. You can expect to pay between $4 and $10 for a single can with a standard pesticide formula. If you need a stronger spray for a stubborn wasp infestation, you’ll pay about $20 to $30 per can. Multipacks containing two to a dozen cans will save you some money. Concentrated commercial formulas cost between $30 and $40 for a bottle that makes 30 to 40 gallons of spray.

Q. When is the best time to use wasp spray?

A. Wasps are least active early in the morning, just before sunset and when temperatures are lower. These insects are extremely active in the middle of the day when temperatures are high. Try to use the spray when the wasps are less active. It’s safer for you because wasps that escape the spray will be less likely to attack you.

Q. How do I know if a wasp nest is active?

A. If you see wasps crawling around a nest, it’s active. Sometimes wasps start to build a nest in a certain spot before giving up and moving to a new location. If you don’t see wasps actively crawling on an unfinished, open nest, you can knock it down without having to use spray. Treat any enclosed, finished nest as active even if you don’t see wasps.

Q. How far away should I stand from the nest when using spray?

A. Any can of consumer-level wasp spray should indicate the distance for safe use. The farther away you stand, the less accurate you’ll be. On the other hand, swarming wasps are more likely to sting you if you’re close to the nest and you miss them with the spray. Stand near the limit of the recommended distance.

Q. How dangerous is wasp spray to people and the environment?

A. Wasp spray is an insecticide, meaning it contains poisonous chemicals and should be handled with care. Don’t use it around pets, pet food or water. Move potted plants away from the area. If any of the spray contacts your skin, wash the area thoroughly. If you’re worried about residue near the sprayed nest, wash the area a few hours after application with warm water, soap and a sponge or scrub brush.

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