--- product_id: 72448195 title: "RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon" brand: "rm18" price: "R2495" currency: ZAR in_stock: true reviews_count: 8 category: "Rm18" url: https://www.desertcart.co.za/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1 store_origin: ZA region: South Africa --- # Treats 12,600 sq ft 1-gallon concentrate Visible results in 12 hours RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon **Brand:** rm18 **Price:** R2495 **Availability:** ✅ In Stock ## Summary > 🌱 Fast, fierce, and flawless weed control—because your lawn deserves the best. ## Quick Answers - **What is this?** RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon by rm18 - **How much does it cost?** R2495 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/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 & Save Time:** Easy-to-use spray form cuts down manual labor—ditch the weed whacker and reclaim your weekend. - • **Trusted & Proven Formula:** Highly rated with 4.5 stars from over 1,800 users—join the community of satisfied pros. - • **Maximize Your Yard Control:** One gallon makes up to 42 gallons of ready-to-use spray—cover more, stress less. - • **Dominate Weeds & Grass Fast:** See visible results in just 12 hours—because your time is valuable. - • **Massive Coverage, Minimal Effort:** Treats up to 12,600 square feet—perfect for large properties or commercial spaces. ## Overview RM18 Fast-Acting Weed & Grass Killer is a powerful 1-gallon herbicide concentrate that treats up to 12,600 sq ft with visible results in just 12 hours. Trusted by thousands, it transforms weed control into a quick, efficient task, making it ideal for large lawns and professional use. ## Description RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon Review: It works, just keep dry and give time - Good this product first at local store in small container. It worked very well on south Florida stubborn weeds on rock beds, between travertine pool deck and paver driveway. I am glad desertcart had a bigger container for a fair price. After application try to keep area dry for 3 days and you will see the results. I have to re-apply maybe monthly or bi monthly. Review: NOT FAST BUT WORKS - It took 3 days to see the wilting and yellowing. After some warmer temperatures and sun it did work. ## 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 | #7,233 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #83 in Weed Killers | | Brand | RM18 | | Brand Name | RM18 | | Coverage | 12600 Square feet | | Customer Reviews | 4.4 out of 5 stars 1,932 Reviews | | 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 | 9.25 Pounds | | Liquid Volume | 1 Gallons | | Manufacturer | Ragan & Massey, Inc. | | Model Number | 75436 | | Part Number | 75436 | | UPC | 737716754360 | | Unit Count | 128.0 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It works, just keep dry and give time *by L***Y on May 1, 2026* Good this product first at local store in small container. It worked very well on south Florida stubborn weeds on rock beds, between travertine pool deck and paver driveway. I am glad Amazon had a bigger container for a fair price. After application try to keep area dry for 3 days and you will see the results. I have to re-apply maybe monthly or bi monthly. ### ⭐⭐⭐⭐⭐ NOT FAST BUT WORKS *by F***E on April 9, 2026* It took 3 days to see the wilting and yellowing. After some warmer temperatures and sun it did work. ### ⭐⭐⭐⭐⭐ It works great *by G***. on May 25, 2026* This stuff is awesome be careful when you use it it will kill the grass It destroys the weeds like no other chemical I’ve ever used, highly recommended it --- ## 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.za/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1](https://www.desertcart.co.za/products/72448195-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-06-03*