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Syngenta

Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40%

    • Based on 8,935 reviews
Condition: New
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This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Dec 24
Order within 7 hours and 15 minutes
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Features

  • Quick knockdown and long-lasting - 90+ day residual
  • Can be used inside and out
  • Size: 1 Envelope contains Four 9.5 gram water soluble packets
  • Yield and Mixing: One 9.5g packet mixed with 1 gallon of water covers a 2,000 to 2,500 sq.ft. home.
  • Target Pest: Ants, Aphidsc, Assassin Bugs, Boxelder Bugs, California Oakworm, Centipedes, Chiggers, Chinch Bugs, Cockroaches, Crickets, Earwigs, Elm Leaf Beetlec, Firebrats, Fleas, Flies, Millipedes, Mites, Mosquitoes, Pillbugs, Silverfish, Sowbugs, Termitese, Bees, Carpenter Ants, Carpenter Bees, Fire Ants, Acorpions, Sod Webworms, Spiders, Ticks, Wasps

Description

Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40%

Item Form: Powder


Item Weight: 0.04 Kilograms


Liquid Volume: 1 Gallons


Active Ingredients: Cypermethrin


Brand: Syngenta


Item Form: Powder


Item Weight: 0.04 Kilograms


Liquid Volume: 1 Gallons


Active Ingredients: Cypermethrin


Brand: Syngenta


Target Species: Insects


UPC: 702941748194


Product Dimensions: 6 x 3 x 0.25 inches


Item Weight: 1.41 ounces


Manufacturer: syngenta


Country of Origin: USA


Item model number: 74819


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Dec 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Surpassed my expectations!
We have been using Ortho home bug spray for several years now in order to keep a roach, scorpion & spider problem under control. We hadn't really seen many roaches inside our house, except an annoying few during the night in our kitchen. The real problem was out in our back yard & back part of the house where there are prominent cracks in the foundation (old house) & less traffic. In the yard we have flies as well that we could not get rid of easily on our garbage cans (I tried insect spray, but once it gets wet from rain or the sprinklers outside it stops working). Well, I had read about Demon WP online searching for a way to get rid of Black Widow spiders & many people reviewed this product to kill many different bugs right on contact including black widows. Thankfully Amazon has it here because it isn't available in my town. The first spraying I just did a few choice spots to see if it would really work ( I was skeptical). I used 2 packets in a one gallon sprayer. The next morning we found a couple dozen bugs inside the back part of our house & the outside area were where the masses were dead. Impressive. So, I mixed up just one packet in a gallon sprayer & went around the inside & outside again focusing on all the cracks, perimeter & missing nothing. The next morning we found more bugs than the first time. Now it has been a week since my initial spraying & we are still finding dead bugs, roaches, beetles, ants, spiders, moths & flies to name a few. Now I had the idea to spray our rental home that is semi vacant. There was a take over by black widow spiders in that house. It took one packet in a one gallon sprayer, full inside perimeter & just the area outside where the spiders were taking over, including the front porch perimeter. Next morning & every other morning after that we continue to find dozens of bugs dead before they made it into the front door, including the black widow spiders. That cleared up the bug problem. I had no idea this stuff would continue to work as well as it is. In the past we have tried sprays, powders & mixes that bugs became immune to or that quit working once it got wet from rain or the sprinklers. Demon WP does not stop killing bugs & when I say it kills bugs, I do mean it kills in masses if that's what you have crawling around your house like we did. I've re-ordered this larger pack, because the price to mix my own comes out less than buying a gallon of already mixed spray (that doesn't work as well). My plans now are to share this with my family who are having a serious bug problem & live in an old, cracked house with many places for bugs to hide. I would not recommend this to my family if it did not work. This stuff works better than any store bought product I have tried in many, many years & for the first time we do not have bugs in our patio, porch, or even the back parts of our house. We can sit outside & not be attacked by a crawly thing. Amazing feeling to know that one simple powder mix can & does eliminate a bug problem quickly as it does. Keep in mind that if you have a really bad problem with bugs, you will need to spray occasionally to keep the numbers down. I am going to continue spraying as well, too. One comment on the odor, this to me has no odor & does not burn my skin if I spill it on me. (be careful to wear gloves & keep away from your face though). Great product, excellent price & like the reviews state this stuff works. ... show more
Reviewed in the United States on August 29, 2012 by Cat Lady
    • The name matches the results!
This is extremely effective, depending on your problem. It has a list on it that tells you what insects it works on and gives you directions for the strength of the mixture you need. It does leave a white residue, so it may be better to use on the outside of the house for most people. It doesn't kill all insects instantly, so it can take a little bit to notice the difference. Within a week my house turned into an insect graveyard. Keep in mind it doesn't last as long outside, so you might have to do it every 1-2 months, depending on your weather. Good stuff for normal insect pest control. ... show more
Reviewed in the United States on August 12, 2024 by Amazon Customer
    • really works!
As others have written - this stuff is really effective for .....well just about any kind of bug that comes into contact with it. I applied it around the base of my home, primarily to deter scorpions here in TX and after a couple months I'm still finding lots of dead bugs. It has been very dry during this time, so I'm not clear how it holds up after a rain, but have to say so far I'm impressed. Would appreciate a more definitive statement from the manufacturer as to any long term adverse impact on wildlife (e.g. birds that eat the deceased bugs) - my initial research didn't find any clear statement one way or another. We do have pets and I followed the instructions to keep pets away from the spray until it has dried. ... show more
Reviewed in the United States on August 27, 2024 by JD
    • This stuff finds bugs you didn't know existed!
We had a professional pest company that used to come and they didn't come close to touching with this stuff does! First time I sprayed it I did inside and out. Literally look like a nuclear bomb went off specifically meant for bugs because there was carnage everywhere! I have not had to treat inside again I only treat outside once a month. This stuff is absolutely amazing I'm so glad I found it I will continue saving money and doing it myself. PS This is PetSafe We have a 3 and 1/2 lb Pomeranian and as long as it is dry it does not affect her whatsoever. ... show more
Reviewed in the United States on September 17, 2024 by Ryan
    • Very effective
Highly effective product. I had tried everything else before this. I utilized the Sevin powder, diatomaceous earth, and traps. Things like Zevo and Raid are great for killing what’s right in front of you but this was a very effective barrier. It was a little difficult to follow the instructions for what I needed initially only because the paper had so much information. Mixing and spray was a breeze. I will definitely use this as a maintenance product in the fall/spring. ... show more
Reviewed in the United States on June 26, 2024 by Vicki B
    • It works
It works very well and kills effectively. It’s not an instantaneous kill, it paralyzes them and then they eventually die. It does leave a white residue when it dries.
Reviewed in the United States on November 1, 2024 by Tressa Jae
    • Great product
We live in the country and been dealing with spiders for long time. My neighbor told me about Demon WP. I spray about every 45 days and we haven’t seen spiders or any other bug since. I first bought a tractor supply, but it’s almost 4 dollars cheaper on Amazon. You won’t be disappointed.
Reviewed in the United States on October 22, 2024 by Edwin Carl Meroney
    • Scorpion killer
I'm in Phoenix AZ. Double strength, this kills scorpions and anything else. Forget the pest guy. Use this when needed. A fraction of the cost. I only spray outside. Not sure you'd want this inside, it's powerful. If you kill em before they can get in, you don't need to spray inside!
Reviewed in the United States on December 11, 2024 by B Mile

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