---
product_id: 719292566
title: "RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon"
brand: "rm18"
price: "S$253"
currency: SGD
in_stock: true
category: "Rm18"
url: https://www.desertcart.sg/products/719292566-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1
store_origin: SG
region: Singapore
---

# 1 gallon concentrate Covers 12,600 sq ft Visible results in 12 hours RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon

**Brand:** rm18
**Price:** S$253
**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?** S$253 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/719292566-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 format for precise, no-mess application every time.
- • **Max Coverage Power:** Treats up to 12,600 sq ft—your lawn’s ultimate defense.
- • **Rapid Action Formula:** See weeds vanish in just 12 hours—fast relief for busy pros.
- • **Trusted by Thousands:** 4.4-star rating from nearly 2,000 users—join the satisfied crowd.
- • **Concentrated Efficiency:** 1 gallon makes 42 gallons of ready-to-use spray—more value, less hassle.

## 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 ideal for professionals and homeowners seeking quick, effective weed control. Highly rated by users, this spray solution offers maximum coverage and easy application.

## 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 |
| Brand Name | RM18 |
| Coverage | 12600 Square feet |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,917) |
| 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 |
| Number of Packs | 1 |
| Part Number | 75436 |
| UPC | 737716754360 |
| Unit Count | 128.0 Milliliters |

## Product Details

- **Active Ingredients:** Herbicide
- **Brand:** RM18
- **Item form:** Spray
- **Item weight:** 9.25 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/51XdehSrjhL.jpg)
![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 2](https://m.media-amazon.com/images/I/31ZS1gnb-gL.jpg)
![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 3](https://m.media-amazon.com/images/I/51dpjPjwHSL.jpg)
![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 4](https://m.media-amazon.com/images/I/51XrWiI3-TL.jpg)
![RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon - Image 5](https://m.media-amazon.com/images/I/31ldgWB4XCL.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.

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**Shop now:** [https://www.desertcart.sg/products/719292566-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1](https://www.desertcart.sg/products/719292566-rm18-fast-acting-weed-and-grass-killer-herbicide-spray-1)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-08-23*