--- product_id: 72448195 title: "RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon" brand: "rm18" price: "S$166" currency: SGD in_stock: true category: "Rm18" url: https://www.desertcart.sg/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1 store_origin: SG region: Singapore --- # 1 gallon concentrate covers 12,600 sq ft visible in 12 hours RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon **Brand:** rm18 **Price:** S$166 **Availability:** ✅ In Stock ## Summary > 🌿 Kill Weeds Fast, Own Your Lawn Faster! ## Quick Answers - **What is this?** RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon by rm18 - **How much does it cost?** S$166 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1) ## Best For - rm18 enthusiasts ## Why This Product - Trusted rm18 brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Spray & Slay:** Easy-to-use spray form lets you target weeds precisely, no mess, no fuss. - • **Trusted & Proven:** Rated 4.4 stars by nearly 2,000 users—join the community of satisfied lawn pros. - • **Fast-Acting Formula:** See visible weed and grass elimination in just 12 hours—because time is turf. - • **Unmatched Coverage Power:** Treats up to 12,600 square feet, perfect for expansive lawns and gardens. - • **Maximize Your Yard's Potential:** One gallon makes up to 42 gallons of ready-to-use spray—effortless coverage for large spaces. ## Overview RM18 Fast-Acting Weed & Grass Killer is a powerful 1-gallon herbicide concentrate that treats up to 12,600 square feet. Its fast-acting formula delivers visible results within 12 hours, making it a top choice for efficient, large-scale weed control. Trusted by thousands with a 4.4-star rating, RM18 transforms your lawn care routine with professional-grade performance. ## Description RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon ## Features - Makes up to 42 gallons to ready-to-use spray solution - Treats up to 12, 600 Square feet - Visible results in 12 hours ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BB8G44B | | Active Ingredients | Herbicide | | Best Sellers Rank | #5,067 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #92 in Weed Killers | | Brand Name | RM18 | | Coverage | 12600 Square feet | | Customer Reviews | 4.4 4.4 out of 5 stars (1,982) | | Included Components | RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon | | Item Form | Spray | | Item Type Name | RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon | | Item Weight | 9.3 pounds | | Liquid Volume | 1 gallons | | Manufacturer | Ragan & Massey, Inc. | | Model Number | 75436 | | Number of Packs | 1 | | Part Number | 75436 | | UPC | 737716754360 | | Unit Count | 128 Fluid Ounces | | Warranty Description | Warranty | ## Product Details - **Active Ingredients:** Herbicide - **Brand:** RM18 - **Item Form:** Spray - **Item Weight:** 9.3 pounds - **Liquid Volume:** 1 gallons ## Images ![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 1](https://m.media-amazon.com/images/I/81Wg5DNk2vL.jpg) ![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 2](https://m.media-amazon.com/images/I/71yyRVHN+XL.jpg) ![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 3](https://m.media-amazon.com/images/I/81Xr851saXL.jpg) ![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 4](https://m.media-amazon.com/images/I/81z9MaSC3GL.jpg) ![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 5](https://m.media-amazon.com/images/I/717jweWmNmL.jpg) ## Questions & Answers **Q: will this work for Spotted spurge** A: Call RM18 mfg for specific advice **Q: Will it work on catails and if so though the root?** A: I'm not sure. Look up the list of plants it kills. I know that it can kill kudzu and bamboo -I've done it personally. I would try mixing 6-8oz per gallon if something like that. **Q: How long should I wait before planting my own garden? I want to kill existing grass and then put in plants of my own.** A: It only kill when it is sprayed on the leaf. Ground deactivates it **Q: Why doesn't this kill anything?** A: I use about 4 oz per gallon of water. Spray and make sure you have a day or two of sunshine. No rain for several days. It takes close to a week to really show the killing power, but believe me it works. Been using this product for years. --- ## 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.sg/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1](https://www.desertcart.sg/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-15*