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FireHawk® Bioherbicide Ready To Use

Fast-acting, non-selective weed and grass control that’s ready when you are.

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Powerful. Versatile. Reliable.
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FireHawk Bioherbicide Ready to Use delivers fast, non-selective control of common weeds, grasses, and moss, with visible results on most weeds in just hours. The pre-mixed, ready-to-spray formula makes spot treatment simple—just spray where weeds are actively growing. Designed for use on patios, walkways, driveways, mulch beds, and landscaped areas, FireHawk works only where the spray lands, affecting the green plant tissue it directly contacts. People and pets may re-enter treated areas once the spray has dried. Always read and follow label instructions.

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Patios, driveways and walkways
Flower beds and landscaped areas
Around trees, shrubs, fences, and foundations
Gravel, mulch beds and edging
Fast-acting, non-selective burndown of broadleaf weeds, grasses, and moss Fast-acting, non-selective burndown of broadleaf weeds, grasses, and moss
Visible results for most weeds in a few hours, faster on sunny days Visible results for most weeds in a few hours, faster on sunny days
Works only where sprayed - Does not translocate to soils or other plants Works only where sprayed - Does not translocate to soils or other plants
Does not damage mature, non-green, woody parts of plants Does not damage mature, non-green, woody parts of plants
People and pets may re-enter once dry People and pets may re-enter once dry
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How it Works

FireHawk Bioherbicide Ready to Use is a contact, non-selective weed control solution powered by nonanoic acid. It works only where the spray lands—breaking down the green, actively growing plant tissue it directly coats. Because it does not move through the plant or remain active in the soil, FireHawk provides fast, visible burndown, giving homeowners precise control over where and how they treat.

Contact-based, non-selective 
control
Uses nonanoic acid as its active ingredient —a fatty acid— that affects only green tissue sprayed
Does not move through soil or plants
Mature, non-green woody stems are not damaged
Non-selective control

FireHawk affects any green plant tissue it contacts. Avoid spraying desirable plants, and it is not recommended for use on turfgrass or lawns.

Shake well before use

FireHawk is an emulsified formulation. Shaking ensures the product is fully mixed for consistent coverage and best results.

Spray thoroughly

Uniformly spray the weeds or grasses you want to control until thoroughly wet using course droplets, avoid drift.

Shield desirable plants

Not recommended for spot weed control in lawns. This product harms lawn grasses. When treating weeds around desirable plants, shield plants from drift with cardboard or plastic.

Rainproof

Do not apply if rainfall is expected within 2 hours.

Followup applications

Some (mature or woody) weeds will require an additional application(s) 2-3 weeks for complete control.

Why FireHawk Bioherbicide?
FireHawk Bioherbicide Weed Guide

Explore the many common weeds FireHawk Bioherbicide Ready to Use helps control

FireHawk Bioherbicide Ready to Use is guided by farmers who practice regenerative agriculture—people who think carefully about soil, ecosystems, and the spaces families use every day. Their perspective helps us create weed control solutions that are effective, targeted, and thoughtfully designed.

Stories from the Field – and the Backyard

"IT WORKS, I sprayed the weeds around my raised garden bed in the evening, the next morning they were starting to brown and wilt and by afternoon they were DEAD! There is a very low odor and very easy to use."

–BP, Amazon buyer​

"EXCELLENT!" This is fantastic. Kills weeds thoroughly leaving no dead leaves etc to clean up. Highly recommend."

– Susan S, Amazon buyer​

"This product really works as described."

– Michelle B., Verified buyer

"Good Product. Used in the garden beds, edges, driveways and paths."

– Lucinda, Verified buyer​
FAQs

About FireHawk

A Bioherbicide is a weed control product derived from naturally occurring compounds. FireHawk Bioherbicide’s active ingredient is nonanoic acid, a fatty acid, for fast-acting non-selective contact weed control.

FireHawk Bioherbicide works on contact to rapidly desiccate weeds, by damaging only the green parts of plant tissue. It controls existing weeds only.

FireHawk Bioherbicide controls weeds, grasses, moss, and algae. Refer to the product label for species controlled.

Weed Control & Results

Apply FireHawk Bioherbicide only as directed on the label. It works best on actively growing weeds under 5 inches.

FireHawk Bioherbicide is for outdoor residential use in approved areas such as driveways, patios, walkways, gravel, flower beds, vegetable gardens, trees, and shrubs.

FireHawk Bioherbicide is fast-acting and starts working within hours.

Yes. FireHawk Bioherbicide is rainproof in 1 to 2 hours, depending on the product version and label directions.

Use & Safety

For FireHawk Ready-To-Use, people and pets may enter the treated area after the spray has dried. Always follow label directions for the product being used.

FireHawk Bioherbicide is non-selective and can affect lawn grasses and other desirable plants it touches. Shield nearby plants during application.

No. FireHawk Bioherbicide has no residual soil activity.

Larger or harder-to-control weeds may require multiple applications.

Are You Ready to Take Control?
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