--- product_id: 2621759 title: "Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40%" brand: "syngenta" price: "FREE" currency: ARS in_stock: false reviews_count: 8 url: https://www.desertcart.com.ar/products/2621759-syngenta-demon-wp-insecticide-2-envelopes-containing-4-water-soluble store_origin: AR region: Argentina --- # 90+ day residual power Water-soluble 9.5g packets Covers up to 2,500 sq.ft. per gallon Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% **Brand:** syngenta **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🛡️ Defend your domain with 90+ days of unstoppable pest power! ## Quick Answers - **What is this?** Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% by syngenta - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/2621759-syngenta-demon-wp-insecticide-2-envelopes-containing-4-water-soluble) ## Best For - syngenta enthusiasts ## Why This Product - Trusted syngenta brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **High Coverage Efficiency:** One packet treats up to 2,500 sq.ft., maximizing value and minimizing effort. - • **Broad-Spectrum Pest Defense:** Targets over 25 common household and garden pests, from ants to spiders and mosquitoes. - • **Unmatched 90+ Day Knockdown:** Experience long-lasting pest control that keeps your space protected for over three months. - • **Versatile Indoor & Outdoor Use:** Seamlessly protect your entire home environment, inside and out, with one powerful formula. - • **Precision Water-Soluble Packets:** Easy-to-mix 9.5g packets dissolve instantly for hassle-free application every time. ## Overview Syngenta Demon WP Insecticide delivers professional-grade pest control with 40% Cypermethrin in easy-to-use water-soluble packets. Each 9.5g packet mixes into 1 gallon of solution, covering up to 2,500 sq.ft. Its quick knockdown and 90+ day residual effect make it ideal for indoor and outdoor use against a wide range of pests, ensuring long-lasting protection for your home and garden. ## Description Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% Review: THE BEST BUG SPRAY SOLD FOR DO IT YOUR SELFERS - We do our own insect control. And Demon WP is the reason we can. We just put in our spray bottle and quickly and easily spray away. It is safe for our pets and we never see any bugs. They hate it! We do this at least twice a year in our Florida home. It is so reasonably priced and I save because I don’t have to pay a company to come out. Review: Truly Effective Insecticide Treatment - My husband is a huge fan of this Demon WP Insecticide. We are constantly ordering it here on desertcart because the cost is reasonable and you get a good value for your money. My husband mixes one envelope of the Demon into a bucket with a gallon of water. The mixability of the demon and water is awesome and there is no seperation noticed. He then pours it into a pump up sprayer and sprays the slab around our house to treat for bugs. He also sprays all the ant beds in the yard and it's very effective at killing the ants. Whatever is left in the sprayer after he's treated all areas in the yard he just leaves the Demon mixture in the sprayer for the next use. This product is extremely versatile and has proved to be a valuable resource for treating all bugs and insects around our home. After the treatment, we immediately see dead bugs, insects, and ants, and the removal of these pests lasts around three months. We highly recommend this Demon WP for your extermination of pests around your home. ## 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,¤Ԥ¸¤Á¤­corpions, Sod Webworms, Spiders, Ticks, Wasps ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002Y6DNCK | | Active Ingredients | Cypermethrin | | Best Sellers Rank | #28,323 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #432 in Insect & Pest Repellent Sprays | | Brand | Syngenta | | Brand Name | Syngenta | | Customer Reviews | 4.6 out of 5 stars 10,060 Reviews | | Included Components | 1 bag | | Item Form | Powder | | Item Type Name | Water Soluble Insecticide | | Item Weight | 1.4 ounces | | Liquid Volume | 1 gallons | | Manufacturer | syngenta | | Model Number | 74819 | | Part Number | 74819 | | Target Species | Insects | | Unit Count | 2 Count | ## Product Details - **Active Ingredients:** Cypermethrin - **Brand:** Syngenta - **Item Form:** Powder - **Item Weight:** 1.4 Ounces - **Liquid Volume:** 1 Gallons ## Images ![Syngenta Demon WP Insecticide 2 Envelopes Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% - Image 1](https://m.media-amazon.com/images/I/415WmWLhIJL.jpg) ## Questions & Answers **Q: I have 2 young kids. Is it safe to spray this inside the house (around baseboards). Getting ants this winter.** A: I cannot say anything about the ants but I managed to exterminate cocroaches who are the great survavals. The substance have no smell and did not influence the state of health anyway ,though I used it all around the kitchen floor in all the corners and crevices.Nither of my family members complained. I had to repeat the spraying a couple of times until all the disabled creatures died out. I think that the substunce is magic. Very glad that I was recomended to use it. **Q: Whats the difference in this active ingredient (cypermethrin) and Cyfluthrin?** A: Cyfluthrin belongs to a class of insecticides known as synthetic pyrethroids. ... Cypermethrin belongs to a class of insecticides known as synthetic pyrethroids, found in Cynoff EC, Cynoff WP, Cyper TC Termiticide, Cyper WP, and Demon WP pesticide concentrates. But that info really won't help you . what product are you trying to compare with demon wp? cy-kick? Both Cykick CS and Demon WP are great products. When sprayed, Cy-Kick CS creates a thick barrier of microcapsules that is impossible for insects to cross without being exposed to a lethal dose of insecticide. Exposed insects pick up microcapsules on their hairs and body triggering a rapid release of the active ingredient, resulting in death. Cy-kick’s active ingredient Cyfluthrin is a pyrethrin, which means it is user-safe, environment friendly, and less likely to cause skin irritation than other active ingredients. Cy-kick CS is virtually odorless, and will not create a visible residue or stain when used according to the recommended label rate. 16 oz. Demon WP insecticide is a wettable powder that is mixed with water. It can be applied as a crack and crevice and/or spot treatment for residual and contact control of ants, bees, biting flies, boxelder bugs, centipedes, cockroaches, crickets, earwigs, elm leaf beetles, firebrats, fleas, flies, millipedes, mosquitoes, pillbugs, silverfish, sowbugs, spiders, ticks, and wasps. Demon WP will leave a white residue on dark surfaces. Cy-kick won't **Q: My daughter has a bad infestation of roaches. Will this work?** A: Best to use Maxforce magnum roach bait gel and gentrol point source igr discs Or advion roach bait gel and gentrol point source igr discs. For roaches inside. **Q: Does this keep stink bugs and keep them away?** A: Yes, I spray all around my house, screens, doors etc and they stay away or die shortly after. None have made it indoors in 2 years. ## Customer Reviews ### ⭐⭐⭐⭐⭐ THE BEST BUG SPRAY SOLD FOR DO IT YOUR SELFERS *by D***X on July 4, 2026* We do our own insect control. And Demon WP is the reason we can. We just put in our spray bottle and quickly and easily spray away. It is safe for our pets and we never see any bugs. They hate it! We do this at least twice a year in our Florida home. It is so reasonably priced and I save because I don’t have to pay a company to come out. ### ⭐⭐⭐⭐⭐ Truly Effective Insecticide Treatment *by S***Y on March 29, 2026* My husband is a huge fan of this Demon WP Insecticide. We are constantly ordering it here on Amazon because the cost is reasonable and you get a good value for your money. My husband mixes one envelope of the Demon into a bucket with a gallon of water. The mixability of the demon and water is awesome and there is no seperation noticed. He then pours it into a pump up sprayer and sprays the slab around our house to treat for bugs. He also sprays all the ant beds in the yard and it's very effective at killing the ants. Whatever is left in the sprayer after he's treated all areas in the yard he just leaves the Demon mixture in the sprayer for the next use. This product is extremely versatile and has proved to be a valuable resource for treating all bugs and insects around our home. After the treatment, we immediately see dead bugs, insects, and ants, and the removal of these pests lasts around three months. We highly recommend this Demon WP for your extermination of pests around your home. ### ⭐⭐⭐⭐⭐ Goodbye bugs! *by R***H on June 5, 2026* I bought the Demon WP insecticide (the pack with two packets, each containing four mini packets). You use two mini packets per gallon of water. I added them to my gallon sprayer, half-filled with water, then topped it off, let it sit for a few minutes, shook it, and sprayed away. I live in an RV and have sprayed this at multiple locations, Louisiana, Texas, North Carolina, and every time it works wonders. It’s fantastic at keeping spiders, ants, and other pests out. You’ll start seeing results quickly, often the next day. I’ll keep buying this for every RV spot. Highly recommended! ## Frequently Bought Together - Syngenta Demon WP Insecticide Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% (2 envelopes) - Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White - Atticus Talak 7.9% Indoor/Outdoor Insect Control - Bifenthrin Concentrate (32 Ounce) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/2621759-syngenta-demon-wp-insecticide-2-envelopes-containing-4-water-soluble](https://www.desertcart.com.ar/products/2621759-syngenta-demon-wp-insecticide-2-envelopes-containing-4-water-soluble) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-09-21*