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4.7 out of 5 stars. 77 reviews
product-image

Black Flag 18 oz. Pro Wasp and Hornet Killer Spray

4.7

(77 Reviews)

|

Item # 101290999

$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 # 101290999

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 # 101290999

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

a month 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.
    a month ago
    Helpful?

Q: Does this kill instantly?

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

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

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

Q: What are the active/inactive ingredients?

5 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

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

Overall Rating

4.7
50 out of 54 (93%) reviewers recommend this product

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1 to 4 of 77 Reviews .
1 – 4 of 77 Reviews
Review 1

DOES NOT WORK!!!

19 days ago
Product does not kill on contact. Sprays 10 to 12 feet at best. I soaked a small soccer ball sized nest with entire can. Sprayed numerous hornets directly. EVERYONE continued flying. A few landed on leaves and appeared to be dazed then 15 to 30 seconds later flew away. Knocked nest down 30 minutes later and numerous hornets flew out. Of course I knocked it down and ran away. I then immediately walked closer and hornets were still leaving nest. Nest was only about 3 feet off the ground on a bamboo stalk so very easy to access. So no accusations from manufacturer about applying product thoroughly.
Brazil Indiana
Review 1
Age35 to 44
GenderMale

Kills bald face hornets nest

a month ago
I purchased this after trying another brand. I used this to kill a medium sized Bald face hornets nest up in the eve of my home. I did use a spray can extension on a pole as well. It will kill hornets even ad they come back to the hive. While i was using the product, the hornets did not even have a chance to come out. There is an odor that will be around for a while. I take that as a good sign this stuff is great.

Yes, I recommend this product.

Originally posted on Spectracide

Texas
Review 1

Would not recommend

7 months ago
Did not kill the wasps.
SweepstakesYes

No, I do not recommend this product.

Review 1

Kills on contact

11 months 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