will this work for Spotted spurge

Call RM18 mfg for specific advice

Will it work on catails and if so though the root?

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.

How long should I wait before planting my own garden? I want to kill existing grass and then put in plants of my own.

It only kill when it is sprayed on the leaf. Ground deactivates it

Why doesn't this kill anything?

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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RM18 Fast-Acting Weed & Grass Killer Herbicide, Spray, 1-gallon

Product ID: 719292566

Details

Active Ingredients
Herbicide
Brand
RM18
Item form
Spray
Item weight
9.25 Pounds
Liquid volume
1 Gallons

💧1-gallon concentrated power

📏Covers 12,600 sq ft area

⏱️Visible results in 12 hours

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1357.95 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Eradicate Weeds Fast, Own Your Lawn Game!

FAST ACTING FORMULA - See weeds and grass vanish within 12 hours—because your time is valuable.
TRUSTED BY THOUSANDS - Rated 4.4 stars by over 1,800 users who demand effective lawn care.
EASY SPRAY APPLICATION - Spray form ensures precise, mess-free application for professional-grade results.
HIGHLY CONCENTRATED SOLUTION - Makes up to 42 gallons of ready-to-use spray, stretching your investment further.
MAX COVERAGE MINIMAL EFFORT - Treats up to 12,600 sq ft with just one bottle—perfect for large lawns or commercial spaces.

RM18 Fast-Acting Weed & Grass Killer is a powerful 1-gallon herbicide spray that covers up to 12,600 square feet. Its concentrated formula makes up to 42 gallons of ready-to-use solution, delivering visible weed and grass elimination in just 12 hours. Trusted by thousands with a 4.4-star rating, it offers an efficient, easy-to-apply solution for pristine lawns.

Specifications

ASIN	B07BB8G44B
Active Ingredients	Herbicide
Brand Name	RM18
Coverage	12600 Square feet
Customer Reviews	4.4 4.4 out of 5 stars (1,857)
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	4.2 kg
Liquid Volume	1 Gallons
Manufacturer	Ragan & Massey, Inc.
Model Number	75436
Part Number	75436
UPC	737716754360
Unit Count	128.0 Milliliters

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TrustScore 4.5 | 7,300+ reviews

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