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4.6 out of 5 stars. 79 reviews
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Black Flag 18 oz. Pro Wasp and Hornet Killer Spray

4.6

(79 Reviews)

|

Item # 1012909

$7.99
A woman outside with a dog
A woman outside with a dog

Black Flag 18 oz. Pro Wasp and Hornet Killer Spray

Black Flag 18 oz. Pro Wasp and Hornet Killer Spray

Item # 1012909

Black Flag Black Flag 18 oz. Pro Wasp and Hornet Killer Spray
Black Flag Black Flag 18 oz. Pro Wasp and Hornet Killer Spray


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Black Flag 18 oz. Pro Wasp and Hornet Killer Spray

Item # 1012909

Black Flag Black Flag 18 oz. Pro Wasp and Hornet Killer Spray
Black Flag Black Flag 18 oz. Pro Wasp and Hornet Killer Spray

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Grassland (franklin) TN

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Keep your home safe from the pests with the Black Flag 18 oz. Pro Wasp and Hornet Killer Spray. The long-lasting formula helps the insecticide remain effective along surfaces for up to 4 weeks after application. The power design of the spray helps the insect control reach nests from up to 20 ft. away to keep you safe from angry insects.

  • Insecticide kills wasps, hornets, yellow jackets and mud daubers
  • Reaches nests up to 20 ft. away for convenience
  • Kills the entire nest and returning wasps and hornets for up to 4 weeks
  • Only use the insect control outside, never indoors
  • Apply at sunrise or sunset when insects are least active
  • Dielectric breakdown voltage of 47,300 volts

Q&As

1 - 8 of 8 Questions

Q: Does it spray upside down

4 months ago
1 Answer
  • A: Howdy neighbor! Black Flag Pro Wasp and Hornet Killer Spray does not spray upside down due to its internal dip tube design, which requires the can to remain upright to properly draw the liquid insecticide. Inverting the can will cause it to only release empty gas propellant, ruining the can's pressure and causing the liquid to leak onto your hands. For the best safety and results, always stand back and hold the can completely upright to utilize its powerful 20-foot jet stream.
    4 months ago
    Helpful?

Q: Does this kill instantly?

5 months ago
1 Answer
  • AI-assisted, Human-approved
    A: Yes, this spray is designed to kill wasps and hornets on contact.
    5 months ago
    Helpful?

Q: does this work on the wasp that are underrground?

5 years ago
1 Answer
  • A: No
    5 years ago
    Helpful?

Q: What are the active/inactive ingredients?

6 years ago
1 Answer
  • A: Thank you for your question! The active ingredient in this product is Tetramethrin.
    5 years ago
    Helpful?

Q: Will this keep the carpenter Bees from coming back to the same area later? Customers mentioned that it kept other bees away when sprayed. I need something to keep away Carpenter Bees.  Thanks

7 years ago
1 Answer
  • A: Thank you for your question. Our product isn't formulated with a repellent and will not prevent them from returning.
    7 years ago
    Helpful?

Q: Is this black flag or spectracide? It says both.

7 years ago
1 Answer
  • A: Thank you for your question. The product pictured is Spectracide Commercial Wasp & Hornet Killer.
    7 years ago
    Helpful?

Q: Will it discolor green vinyl siding?

8 years ago
1 Answer
  • A: Thank you for your question. This product is non-staining to most home siding depending on age and cleanliness. Before using in areas where the spray may contact home siding, test in an inconspicuous area and recheck in a few hours.
    8 years ago
    Helpful?

Q: If I spray a nest that is in my shrubbery, will it kill the shrubbery in the area that was sprayed?

9 years ago
1 Answer
  • A: When you are spraying the nest, try to avoid spraying it on the foliage. It is possible some damage may occur. It is recommended to spray in the early morning or late evening when the temperatures are cooler.
    9 years ago
    Helpful?

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Reviews

Rating Snapshot

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68 reviews with 5 stars.
4 reviews with 4 stars.
0 reviews with 3 stars.
2 reviews with 2 stars.
5 reviews with 1 star.

Overall Rating

4.6
51 out of 55 (93%) reviewers recommend this product

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Summary of Reviews

AI-generated from customer ratings & reviews, and may include incentivized reviews.
The product is effective at eliminating wasp and hornet infestations. It kills the insects on contact and has a long spray range, allowing users to target nests from a safe distance. The spray continues to be effective for several days, killing any insects that return to the treated area. Many revie...
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This summary is AI-generated from ratings and reviews across multiple languages.
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Most Helpful Favorable Review

Outdoor safety.

7 years ago
The bees pose a danger to the grandkids. Black flag solves the problem.
14 people found this helpful
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Most Helpful Critical Review

Doesn’t kill on contact as advertised

6 years ago
Used two cans of this on a yellow jacket nest. Failed to kill the flying insects and four days later nest is STILL active.
5 people found this helpful
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  • spraying
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  • work with google home
5 to 34 of 79 Reviews .
1 – 30 of 79 Reviews
Texas
Review 1

Would not recommend

9 months ago
Did not kill the wasps.
SweepstakesYes

No, I do not recommend this product.

Review 1

Kills on contact

a year ago
By far the best wasp killer out there, it really does kill and so fast too. 10/10

Yes, I recommend this product.

Originally posted on Spectracide

Review 1

Fast & Effective!

a year ago
Took care of a big wasp nest in minutes! The spray reaches far, works instantly, and kept me safe from stings. Definitely my go-to for any wasp or hornet problem.

Yes, I recommend this product.

Originally posted on Spectracide

Palm City, FL
Reviews 2

Handy product to have when cleaning shtter tracks

a year ago
Wasp larva laid in shutter tracks. Kills on contact and remains active for a few days after application to keep wasps from returning.
SweepstakesYes

Yes, I recommend this product.

Review 1

Useless

a year ago
I purchased this recently and sprayed wasps directly. They turned onto their backs and acted dead. Came back out a couple hours later they were gone and not dead. I then emptied the entire canister onto a tree that was infested with many wasps and I make contact with many of those wasps and the tree. Came back out and the wasps are still flying to and from the tree unharmed. This product does not do as it is advertised at all.

No, I do not recommend this product.

Review 1

Kills brmees

a year ago
Good jet stream to knock down bees
SweepstakesYes
Fennville, Michigan
Reviews 2

Kills hornets on contact

2 years ago
Works great for hornets
SweepstakesYes

Yes, I recommend this product.

Russellville ,Arkansas
Reviews 2

great Value

2 years ago
great product at a great price
SweepstakesYes

Yes, I recommend this product.

Watonga,Oklahoma
Reviews 3

Works fantastically

2 years ago
This is the “kill it now without having to get close” champion. For those that are allergic, this is a complete WIN!
SweepstakesYes

Yes, I recommend this product.

Winter Haven Florida
Review 1
Age55 to 64
GenderFemale

Does a good job

2 years ago
I received a can of this to try out and review. It was used outside and it did a great job ridding us of pests such as wasps. No problem with the wasps returning so far. Spray nozzle did not clog. No leaks.

Yes, I recommend this product.

Originally posted on Spectracide

North Little Rock
Review 1

WORKS INSTANTLY

2 years ago
The Google info that getting the wasps at sunrise and sunset is sort of correct. Around sunrise or sunset and you'll be fine. My nest full of wasps were still snoozing at 10AM when I went to use this. The spray distance on this is amazing and they never had a chance.. it killed them all instantly. They are still hanging from the nest dead in case one of them wasps was out hoeing all night and it will kill it, too, when it finally does the flight of shame back to the nest today. 100% recommended!

Yes, I recommend this product.

NW Georgia
Reviews 14

The Best

3 years ago
The best on the market
2023 Sweepstakes EntryYes

Yes, I recommend this product.

North carolina
Review 1

No quick “knockdown” Safety for European hornets

3 years ago
I bought this product based on other reviews stating there would be a quick knock down effect to wasp and hornet nests as well as the label saying the same. I also thought with the larger % of insecticide compared to the non “pro” version it was likely to help keep me safe while working due to the increased potency. Well I am sure the reviews that stated there was quick knock down effect were honest and it is effective for some species, in my experience it only aggravated the nest and took six~hours to start to have a kill effect on the European hornets that I sprayed. (Sprayed the nest at 6 am. Die off occured at 12:30pm) As these hornets can sting repeatedly without losing their stingers I would not recommend using this product as it does not provide the safety of a quick knockdown affect that one would want in taking out a nest-full of hornets. I followed up with aerosol can of brake cleaner from the safety of my car using the red nozzle attachment with the window barely cracked based on further online research. I only gave 2 stars b/c it may be possible the desired affect of returning hornets were killed because of lasting affect advertised. But it may have been the toxicity of the brake cleaner.

No, I do not recommend this product.

FL
Review 1
Age35 to 44
GenderFemale

Really good

3 years ago
I have a issue with wasps in the stairs to my apartment. And you know wasps aren't the friendliest of insects. And those stairs are very high ceilings and this spray has a great shot distance to kill the wasps and the nest. And i can rest assured that it will kill any coming wasps that walk into the nest. Also is doesn't stain. Even though I don't care since it's outdoor but it's a plus.

Yes, I recommend this product.

Originally posted on Spectracide

Kansas City
Review 1
Age35 to 44
GenderFemale

Works just as it should!

3 years ago
This wasp & hornet spray from Spectracide works just as it should in killing wasps and hornets. The spray bottle is easy to use and the amount of solution in the bottle is good for the value. I would recommend this to anybody with a wasp or hornet problem this summer.

Yes, I recommend this product.

Originally posted on Spectracide

Alabama Al
Review 1
Age25 to 34
GenderFemale

Effective

3 years ago
The Wasp and Hornet spray from Spectracide is really effective killing wasps. It is easy to use and acts fast. The potency of the spray is amazing, you can reach wasp flying up to 27 feet away. This is really an insect spray to keep in handy for spring and summer time where there’s so many wasps and hornets around.

Yes, I recommend this product.

Originally posted on Spectracide

Blythewood, SC
Reviews 8
Age35 to 44
GenderMale

Works great

3 years ago
We have a wasp problem and this eliminated all the wasp nests that we had on the vents for our roof. We also had some of the nests in other places as well. I didn’t even have to get on a ladder it shot almost 10ft.

Yes, I recommend this product.

Originally posted on Spectracide

Review 1

Goes the distance

3 years ago
My son and I are highly allergic to wasps. We live in Florida and summertime is wasp season. As we are spending more time outside, wasps seem to enjoy making their nests all around our house. I am always in search of a product that will eliminate the wasps immediately. When I have used this spray, the results are almost instant. This spray can be used up to 27 feet from the wasp and/or the nest, which is imperative so that I can be sure to avoid a sting from an angry, stray wasp. In the past, I have used products that can only kill the insect that is sprayed. This product lasts for a few days, so that any wasps returning to the next are also killed. I always keep one can of this spray handy in the garage and one in the backyard. Love this spray!

Yes, I recommend this product.

Originally posted on Spectracide

Hudson, NC
Review 1
Age35 to 44
GenderFemale

Kills bee's on contact.

3 years ago
The wasp and hornet sbray is perfect for getting rid of these aggressive pests. The Nozzle on the can Sprays a long distance so you don't have to get close to the bees. One thing that at I cannot stand is a Bee sting. During This Spring and summer I keep a can Easily accessible And this product Kills on contact.

Yes, I recommend this product.

Originally posted on Spectracide

Atlanta
Review 1
Age55 to 64
GenderFemale

Kills wasps and hornets dead!

3 years ago
About a week before receiving this product, my husband was stung in the back of the neck by a wasp. When I received the spray, I went out on our back deck and sprayed everywhere I could find that had any trace of wasps or hornets nest. We also encountered a few in our house and sprayed those as well. This product works great! Highly recommended!

Yes, I recommend this product.

Originally posted on Spectracide

Fountain co
Review 1
Age35 to 44
GenderMale

Wasp no more

3 years ago
We have a huge problem with wasp and this gets rid of them super fast. I love the distance you can spray this from it great for when you got one in a hard to reach space. It doesn't have a super bad chemical smell like most do.

Yes, I recommend this product.

Originally posted on Spectracide

Oklahoma
Review 1
Age35 to 44
GenderFemale

We can fight back now

3 years ago
Wasps are a yearly problem where I live. They quickly build nests on my porch as I have a large covered area by the front door. And they are so territorial that they'll chase anyone. I'm constantly washing away their nests but it's nice to have some bonafide wasp killer on hand now. I appreciate the long distance from which I can use this. Just aim the can out the door and spray. We no longer have to run for our lives.

Yes, I recommend this product.

Originally posted on Spectracide

Dallas TX
Review 1
Age45 to 54
GenderMale

Great product

3 years ago
I have used this brand for many years. I love this product due to its easy to use and not afraid that the swaps will fly toward you to sting you to take a revenge. This product kill them instantly once the swaps got sprayed. Not only the wasps can be killed spontaneously but the entire colony can be destroyed within minutes. The most beautiful about this product is it can reach up to 27 feet. So you don’t have ti use the ladder to spray them when you live in the two stories home or hometown. Highly recommended due to its effectiveness and reasonable price.

Yes, I recommend this product.

Originally posted on Spectracide

Cherryville NC
Review 1
Age35 to 44
GenderFemale

Worked good

3 years ago
Has an easy to remove and apply cap. Says it has a 27 foot jet spray, that I will say is true. I was able to stand a good distance away from the nest to spray it, which helped me feel a bit more safe while trying to get rid of these pests. So far I haven't noticed much if any activity around the nest I sprayed down.

Yes, I recommend this product.

Originally posted on Spectracide

Long Branch, Texas
Review 1
Age65 or over
GenderFemale

Wasp Eliminator

3 years ago
I have had a wasp family on my front porch for a couple of years. I have tried other products without success. So far this product seems to be working like a charm. It took a couple of sprays to get the pests to move on or die but they finally got the message. My front porch is finally wasp free.

Yes, I recommend this product.

Originally posted on Spectracide

Anderson, SC
Review 1
Age35 to 44
GenderFemale

Trusted brand

3 years ago
This is the brand I use with everything. We have somewhat rotten wood on both of our porches on our mobile home and wasps and bees and bumblebees also tend to flock to it. They either build a nest or try to bore holes. This deters them and really knocks them down if not kills them. The power jet sprayer on it is a real positive cuz you don't have to get near them especially since I'm scared to death of bees. Great product

Yes, I recommend this product.

Originally posted on Spectracide

north carolina
Review 1
Age45 to 54
GenderFemale

Powerful Jet Spray

3 years ago
Spectracide Wasp & Hornet spray shoots at least 25 feet easily. So if you've got a hornets nest on a high part of the roof as I did, this will do the trick. It works quickly and within a few days there was no sign of activity at all.I would recommend this product to anyone who needs to get rid of wasps or hornets.

Yes, I recommend this product.

Originally posted on Spectracide

Gallatin
Review 1
Age65 or over
GenderFemale

Spectracide wasp & hornet

3 years ago
I am so glad I got Spectracide 18.5 oz wasp and hornet spray. It is definitely something I need around outside of my home. The wasp and hornets seem to always be flying around when I am doing things around the outside of my home.

Yes, I recommend this product.

Originally posted on Spectracide

NY,NY
Review 1
Age55 to 64
GenderFemale

Kills the Wasps

3 years ago
Had a wasp nest on the patio - took aim at it and it killed the wasps on contact. You do not have to be right on top of the nest - you can spray from a reasonable distance and wasps be gone! No more wasps!!

Yes, I recommend this product.

Originally posted on Spectracide

Fayetteville, NC
Review 1
Age45 to 54
GenderMale

Continues Working for Days

3 years ago
Wasps like to make homes in the corners of the windows on the upper level of my home where they are protected from the elements. I do not like that location because it is right above the front door entrance to my home where they create a nuisance. I love this product has a jet spray that reaches up to 27 feet. That is perfect because it reached the second store eave where they were housed with ease without the need to drag out a ladder. I also appreciate the non-staining formula since my primary purpose was to use the product around my home siding. By the next day I saw no noticeable evidence of wasps swarming around the nest. Since I am not easily able to get up so high to remove the actual nest, I also like that this product continues to kill insects who return to the nest over the next few days. I have also used this product successfully to discourage the carpenter bees who burrow into my wood decking. I only wish this product contained a more targeted and controlled sprayer head. The can sprayer splattered and saturated the entire area around the nests also.

Yes, I recommend this product.

Originally posted on Spectracide