--- product_id: 16269333 title: "Demon WP Insecticide 1 Envelope Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40%" brand: "syngenta" price: "฿2147" currency: THB in_stock: true reviews_count: 8 category: "Syngenta" url: https://www.desertcart.co.th/products/16269333-demon-wp-insecticide-1-envelope-containing-4-water-soluble-9 store_origin: TH region: Thailand --- # Covers 4 gallons for extensive treatment 4 water-soluble packets per envelope 40% Cypermethrin concentration Demon WP Insecticide 1 Envelope Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% **Brand:** syngenta **Price:** ฿2147 **Availability:** ✅ In Stock ## Summary > 🚫🐜 Take back your space—kill pests before they even think of moving in! ## Quick Answers - **What is this?** Demon WP Insecticide 1 Envelope Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% by syngenta - **How much does it cost?** ฿2147 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/16269333-demon-wp-insecticide-1-envelope-containing-4-water-soluble-9) ## 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 - • **Trusted & Highly Rated:** 4.6-star rating from over 3,400 users proves it’s the go-to solution for serious pest problems. - • **Versatile Indoor & Outdoor Use:** Perfect for cracks, crevices, and general surfaces around your home and building exteriors. - • **Powerful 40% Cypermethrin Formula:** Delivers fast, long-lasting control against ants, roaches, spiders, and more. - • **Water-Soluble Packets for Easy Mixing:** No mess, no guesswork—just dissolve and spray for professional-grade results. - • **DIY Pest Control with Pro-Level Efficiency:** Save money and time by eliminating pests yourself without costly exterminators. ## Overview Demon WP Insecticide is a professional-strength pest control solution featuring 40% Cypermethrin in four water-soluble 9.5g packets per envelope, making up to 4 gallons of spray. Designed for both indoor and outdoor use, it targets ants, roaches, spiders, and other common pests with residual and contact action. Highly rated by thousands, it offers an easy, cost-effective DIY alternative to professional exterminators. ## Description Demon WP Review: The Best - I was having problems with ants. It’s like they were getting in everywhere but specifically in my bathroom a girl I worked with told me about this stuff. She said I’ll get my husband to come spray it for you. I said great. I had a sprayer I bought the stuff he came and sprayed it. The one thing you have to be sure that it’s not wet outside and it hasn’t been raining. It has to be dry as long as it’s dry. You spray this everywhere outside he could see everywhere where I needed it but he sprayed everywhere not only does it kill ants. It will kill anything roaches ticks fleas termites. Anything this stuff is wonderful. He sprayed it all under my house all around my house. I live in the country. There are fills everywhere so he sprayed it all around my house and then he went in and sprayed it in my house, it works awesome you don’t need a bug man anymore. If you have this stuff, it works !! no more ants have not seen any ants, not only didn’t kill him outside, but it killed him inside. That’s why it counts. I think you definitely get your moneys worth no doubt about it. I like it so much. I bought some from my uncles house and a sprayer he has ants really bad at his house. I’ve been spraying all outside next. I’m gonna get inside just to be sure there are no critters around! Stop paying those pest control people and buy this and Do it yourself you will save a lot of money!! Review: Highly effective and easy to use! - I am very impressed with this product. It worked exactly as described and cleared up the problem quickly. The application was straightforward, and I saw results almost immediately. I highly recommend it to anyone looking for a professional-grade solution! ## Features - General Surface, Crack and crevice and/or spot treatment for residual and contact control of ants. - Works great on cockroaches, Crickets and spiders - Commercial use on and around buildings and structures. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00E355QOI | | Active Ingredients | Cypermethrin | | Best Sellers Rank | #6,656 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #172 in Insect & Pest Repellent Sprays | | Brand | Syngenta | | Brand Name | Syngenta | | Customer Reviews | 4.6 out of 5 stars 3,536 Reviews | | Item Form | Pellets | | Item Weight | 0.11 Pounds | | Liquid Volume | 4 Gallons | | Manufacturer | Syngenta | | Model Number | 4316247480 | | Part Number | 4316247480 | | Target Species | Insects | ## Product Details - **Active Ingredients:** Cypermethrin - **Brand:** Syngenta - **Item Form:** Pellets - **Item Weight:** 1.76 ounces - **Liquid Volume:** 4 Gallons ## Images ![Demon WP Insecticide 1 Envelope Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% - Image 1](https://m.media-amazon.com/images/I/813YBxOwLJL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ The Best *by L***A on October 13, 2025* I was having problems with ants. It’s like they were getting in everywhere but specifically in my bathroom a girl I worked with told me about this stuff. She said I’ll get my husband to come spray it for you. I said great. I had a sprayer I bought the stuff he came and sprayed it. The one thing you have to be sure that it’s not wet outside and it hasn’t been raining. It has to be dry as long as it’s dry. You spray this everywhere outside he could see everywhere where I needed it but he sprayed everywhere not only does it kill ants. It will kill anything roaches ticks fleas termites. Anything this stuff is wonderful. He sprayed it all under my house all around my house. I live in the country. There are fills everywhere so he sprayed it all around my house and then he went in and sprayed it in my house, it works awesome you don’t need a bug man anymore. If you have this stuff, it works !! no more ants have not seen any ants, not only didn’t kill him outside, but it killed him inside. That’s why it counts. I think you definitely get your moneys worth no doubt about it. I like it so much. I bought some from my uncles house and a sprayer he has ants really bad at his house. I’ve been spraying all outside next. I’m gonna get inside just to be sure there are no critters around! Stop paying those pest control people and buy this and Do it yourself you will save a lot of money!! ### ⭐⭐⭐⭐⭐ Highly effective and easy to use! *by T***Z on April 18, 2026* I am very impressed with this product. It worked exactly as described and cleared up the problem quickly. The application was straightforward, and I saw results almost immediately. I highly recommend it to anyone looking for a professional-grade solution! ### ⭐⭐⭐⭐⭐ The very best exterminating product! *by J***T on February 25, 2026* When I retired from a hospital 20 years ago, I asked the man who exterminated what he used. He said nothing but Demon. Now we say the same thing. We never have bugs in this house, and ever had them in our first house. Demon kills and keeps on killing. It hasn’t bothered our pet or us. I would never use anything else! Demon!! ## Frequently Bought Together - Syngenta Demon WP Insecticide Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% (1 Envelope) - Chapin 20000 Made in USA 1 -Gallon Lawn and Garden Pump Pressured Sprayer, for Spraying Plants, Garden Watering, Weeds and Pests, Polypropylene, Translucent White - Syngenta Demon WP Insecticide Containing 4 Water-Soluble 9.5 Gram Packets Makes 4 Gallons Cypermethrin 40% (2 envelopes) --- ## 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.co.th/products/16269333-demon-wp-insecticide-1-envelope-containing-4-water-soluble-9](https://www.desertcart.co.th/products/16269333-demon-wp-insecticide-1-envelope-containing-4-water-soluble-9) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-01*