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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 9,173 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Apr 29
Order within 15 hours and 25 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: 1.4 Ounces


Liquid Volume: 1 Gallons


Active Ingredients: Cypermethrin


Brand: Syngenta


Item Form: Powder


Item Weight: 1.4 Ounces


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: 1.4 ounces


Manufacturer: syngenta


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, Apr 29

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

    • Great product. I highly recommend.
This is one of the best and effective roach killer that I have ever used. It really works. I have cockroaches and they are hard to get rid off. I notice that they come into my apartment from the neighbor's apartment next door. So I purchased this and sprayed it on the hallyway walls, their door and in my apartment. About a week later, Idid not see any more roaches in my apartment. This last about 3 months when I have to respray, which I don't mind doing because I don't want to live with these critters. I love the product and will continue buying. I really highly reeommend. Also, this product is good for several use and it is a good price on Amazon. ... show more
Reviewed in the United States on March 9, 2025 by KL
    • Very effective and affordable
This is hands down the most effective insect killer, especially spiders! It repels bugs and it will kill anything crossing its path. Leaves a powder residue but it's primarily a crack and crevice so barely noticeable. I have dogs and has never bothered them after I used inside.
Reviewed in the United States on March 25, 2025 by Amy
    • Definitely recommend. This stuff is no joke. Order it!
I had huge water bugs coming in, almost the size of dates😳 so I wanted something really strong. I HATE the smell of Raid, so I shopped around. It said that this stuff killed scorpions so I was sold. I went outside to the back of my house to spray where they were coming from and they instantly scrambled up outta there. I sprayed the cracks around where the house meets the cement and continued toward the front down the driveway. When I turned around to go back in the back door, HUNDREDS of the weirdest bugs were scurrying out, dying. Ones I didn't even know were there and and never seen OR heard of. Scary blue ones--yes, BLUE, and ants the length of my top two pinky knuckles that had STRIPES down their backs came to the surface. It's like this stuff SUMMONS bugs to kill them. 😂 It's easy to use, but due to its nature you have to be fully protected. Masks, protective gloves, long sleeves/pants, etc. Each packet has pouches in it with grayish beige powder. You put an entire pouch per gallon of water to dissolve(depending on the bug or infestation they say you can use 2 for 1st application); it's similar to Tide pods but thinner so don't get them wet before use. Shake well and apply. You can use a sprayer, but I've also applied with a sponge (indoors) to avoid the mist. Follow directions though. As far as smell there's very little and it dissipates when dry. As far as residue, since the powder is colored you may see it drip brownish if it's against white. It did show a whitish residue against my darker floor when it dried but it's not a permanent discoloration. Very good quality stuff. ... show more
Reviewed in the United States on July 3, 2024 by Kay
    • don’t waste your money on pest control company
Never use a pest control company again this kills cockroaches bugs. There is a little smell good value for the money and great size Last about five months. Definitely worth it.
Reviewed in the United States on March 31, 2025 by Ashley Baures
    • 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
    • Perfect pesticide for homeowners
Been using this for a couple years now and I highly recommend it for keeping ants, slugs, spiders and all sorts of insects away from your house. I apply it about twice a year and it works great.
Reviewed in the United States on March 26, 2025 by Trent Vincent
    • Kills young lubber grasshoppers BEFORE they devastate our plants
This works for killing lubber grasshoppers as the young swarm each spring! It has been very effective in interrupting the long term reproduction process.
Reviewed in the United States on April 2, 2025 by Denis Beaudoin
    • Good quality
Good quality
Reviewed in the United States on April 5, 2025 by Marlena Hallett

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