Overview
FireHawk Bioherbicide Ready to Use is a fast-acting, non-selective weed and grass spray made with nonanoic acid. There is nothing to mix: shake well and spray. Treated weeds turn from green to brown or black, often within about an hour in warm, sunny weather.
Where to use it
- Patios, driveways, gravel areas and mulch beds
- Flower beds, vegetable gardens and landscaped beds
- Around shrubs and trees
- Edging, along fences and foundations
- Bed preparation before planting flowers, fruits, vegetables, trees or shrubs; treated areas can be re-sown 1 day after treatment
Weeds it controls
The label lists broadleaf weeds such as chickweed, bittercress, groundsel, lambsquarters, mustards, oxalis, plantain, pigweed, mallow and spotted spurge; grasses such as annual bluegrass, large crabgrass and perennial ryegrass; and moss, liverwort and algae. Bermudagrass, dandelion, yellow nutsedge and common ragweed are listed as moderately difficult to control.
How to use it
- Spray actively growing weeds under about 5 inches tall until thoroughly wet. Best results above 60°F in sun.
- Rainproof 1 hour after application. Do not apply if rain is expected within 2 hours.
- Some weeds need repeat applications every 2 to 3 weeks for complete control.
- The 1 gallon refill is for refilling the 32 oz trigger bottle. Do not add water.
- FireHawk lists the 32 oz bottle as treating up to 75 sq ft and the 1 gallon refill up to 300 sq ft.
Important
- Do not spray plants or grasses you want to keep; they will be harmed. Not recommended for spot weed control in lawns. Shield nearby plants with cardboard or plastic.
- People and pets may enter the treated area after the spray has dried.
- Always read and follow the label directions. Keep out of reach of children.
Active ingredient: nonanoic acid 2.8%. EPA Reg. No. 93740-6.