---
product_id: 256754788
title: "0438580 Grass B Gon Garden Grass Killer Ready-To-Use, 24-Ounce"
brand: "ortho"
price: "฿5016"
currency: THB
in_stock: true
reviews_count: 5
category: "Ortho"
url: https://www.desertcart.co.th/products/256754788-0438580-grass-b-gon-garden-grass-killer-ready-to-use
store_origin: TH
region: Thailand
---

# Selective systemic action Kills tough grassy weeds Ready-to-use spray 0438580 Grass B Gon Garden Grass Killer Ready-To-Use, 24-Ounce

**Brand:** ortho
**Price:** ฿5016
**Availability:** ✅ In Stock

## Summary

> 🌱 Say goodbye to rogue grass—effortless lawn domination starts here!

## Quick Answers

- **What is this?** 0438580 Grass B Gon Garden Grass Killer Ready-To-Use, 24-Ounce by ortho
- **How much does it cost?** ฿5016 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/256754788-0438580-grass-b-gon-garden-grass-killer-ready-to-use)

## Best For

- ortho enthusiasts

## Why This Product

- Trusted ortho brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Use:** Safe for use around ground covers, flowers, shrubs, and trees, preserving your landscape’s beauty.
- • **Compact & Convenient:** 24-ounce bottle perfect for small to medium garden areas; easy to store and handle.
- • **Long-Lasting Results:** Systemic formula ensures deep root action, preventing regrowth of stubborn grasses.
- • **Targeted Weed Control:** Kills crabgrass, fescues, bermuda, and other grassy invaders without harming your prized plants.
- • **Effortless Application:** No mixing or measuring—just spray and watch your unwanted grass disappear.

## Overview

Ortho 0438580 Grass B Gon is a ready-to-use, selective systemic grass killer designed to eliminate invasive grassy weeds like crabgrass and bermuda without damaging surrounding landscape plants. Ideal for use in gardens, flower beds, and around shrubs, it requires no mixing and delivers deep root action for lasting control.

## Description

Ortho Grass B Gon Garden Grass Killer is a ready-to-use, selective, systemic grass killer that can be used to kill existing weedy grasses in and around ground covers, plant beds, landscapes, individual shrubs, and trees. And it won’t harm listed landscape plants. (When used as directed) No mixing is required; just spray and go!Kills crabgrass, fescues, bermuda, and grassy weeds. Won t harm landscape plants. Use in and around groundcovers flowers landscapes and shrubs. Ready to use no mixing or measuring.

Review: I communicated with ortho company to recommend the product that will eliminate nutsedge they informed me to get this product and I followed the steps as recommended, but unfortunately no effect no result. Moreover, they told me to ask desertcart to refund!!!. How can be that ?! The product is fully consumed based on their instructions!!!!!
Review: This Works! I have a terrible invasion of Bermuda grass in a landscaped non-grass area after removing a large tree exposing the area to direct sunlight in Southern California. Did not see any results (The "leaves" will turn brown) until about 10 days after the first application. Directions state to re-apply after 7 days and do not cut the "grass" during this period. One 24 oz bottle does not cover much of an area as you must spray directly on the "leaves". I have a approximately 200+ sqft area and one 24 oz bottle was not enough for one application. I would recommend buying 4 24's or the 40 oz container if you have the same or more than a small area like mine. Product does not seem to affect any of the other plants as well! Will be interesting to see if this very invasive grass comes back as rissoles(?sp) grow up to 1 foot underground making any mechanical removal virtually impossible in a developed area. Well, about a year later and the dreaded Bermuda grass has not come back. There is some reside of the dead grass but is fading away.

## Features

- manufacturer: Ortho
- Item Trademark: ORTHO
- Item Category: Weed Moss Control Agent

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001693OLQ |
| Item model number | 0438580 |
| Manufacturer | Ortho |
| Product Dimensions | 7.62 x 12.7 x 27.94 cm; 680.39 g |

## Product Details

- **Brand:** Ortho
- **Item form:** Liquid
- **Item weight:** 24 Ounces
- **Liquid volume:** 709.76 Milliliters
- **UPC:** 071549043858

## Images

![0438580 Grass B Gon Garden Grass Killer Ready-To-Use, 24-Ounce - Image 1](https://m.media-amazon.com/images/I/71mTSe2D3nL.jpg)

## Questions & Answers

**Q: Has anyone tried this on asparagus to kill grass?**
A: If you are asking about " asparagus fern" it's not really edible asparagus, which you don't want or need to spray.  Asparagus fern is really an obnoxious weed that spreads from rhizomes, and this grass killer does not work on it. Asparagrass fern foliage looks like the edible asparagus, but it's not the same thing.  This grass-killer is a " post-emergent", meaning , that when you spray on the tassels when the nasty invasive bermuda grass, or other (we have it here in Zone 10)  goes to seed, it is absorbed into the grass and makes it impotent, so it can't reproduce anymore. The grass dies in 1-2 weeks, and does not spread it's seed, even after the seed tassels dry out.  You or you gardener then need to pull-out the dean invasive grasses, which are obvious, after 1-2 weeks, and it has not spread it seeds everywhere if using this poison, which I target and don't over-use.

**Q: can it be sprayed on a vegetable garden?  i have grass growing between my beets, carrots etc.  will it kill my vegetables?**
A: Do NOT use in vegetable gardens. This is a pre/post emergent herbicide.

**Q: Does this come in a bigger size?**
A: I think I saw a gallon bottle somewhere in the spring.

**Q: Can I use this for grass growing through my Hosta's without hurting them?**
A: Yes you can. I've used this in my flower beds with great results. Keep in mind anything in the grasses family will be killed.

## Customer Reviews

### ⭐ Review
*by A***Z on 17 November 2025*

I communicated with ortho company to recommend the product that will eliminate nutsedge they informed me to get this product and I followed the steps as recommended, but unfortunately no effect no result. Moreover, they told me to ask amazon to refund!!!. How can be that ?! The product is fully consumed based on their instructions!!!!!

### ⭐⭐⭐⭐⭐ Review
*by D***B on 6 July 2012*

This Works! I have a terrible invasion of Bermuda grass in a landscaped non-grass area after removing a large tree exposing the area to direct sunlight in Southern California. Did not see any results (The "leaves" will turn brown) until about 10 days after the first application. Directions state to re-apply after 7 days and do not cut the "grass" during this period. One 24 oz bottle does not cover much of an area as you must spray directly on the "leaves". I have a approximately 200+ sqft area and one 24 oz bottle was not enough for one application. I would recommend buying 4 24's or the 40 oz container if you have the same or more than a small area like mine. Product does not seem to affect any of the other plants as well! Will be interesting to see if this very invasive grass comes back as rissoles(?sp) grow up to 1 foot underground making any mechanical removal virtually impossible in a developed area. Well, about a year later and the dreaded Bermuda grass has not come back. There is some reside of the dead grass but is fading away.

### ⭐⭐⭐⭐⭐ Review
*by S***N on 3 September 2015*

I have a quite uncontrollable grass infestation in one part of my garden and have tried to dig it out many times without success. I purchased 2 Grass-B-Gone as a last resort because I did not know what else to do save killing everything in the areas with strong weedkiller and starting all over again. I am please to say this stuff really worked. However I needed to put 4 separate applications (but there is a lot of grass) and it has taken a few weeks for it to die back but it has worked. I have just bought another one to make sure the grass does get finished off once and for all.

## Frequently Bought Together

- Ortho 0438580 Grass B Gon Garden Grass Killer Ready-To-Use, 24-Ounce
- Preen Extended Control Weed Preventer - 4.93 lb. Bottle - Covers 805 sq. ft.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-22*