Wilson®WEED OUT®
Concentrate Lawn Weed Killer

500 mL

Former name: Wilson Lawn Weed Out Ultra Concentrate (500mL)

Don’t you love your lawn? And don’t you hate it when noxious weeds rear their ugly heads. Then this powerful concentrate is just for you. You can rid your lawn of broadleaf weeds, with visible results in as little as 24 hours. The concentrate is so powerful that you only need to mix 100 mL of it with 900 mL of water to create 1 L of very potent spray. The spray works efficiently with long-lasting effects, killing weeds such as dandelions, plantains and ragweed right down to the roots -- with no regrowth.You can also use it to refill WEED OUT Lawn Weed Killer with Battery Sprayer.

This product is available in all Canadian regions except MB, NB and PE

Other application types available

Benefits and characteristics

Rid your lawn of broadleaf weeds
Rid your lawn of broadleaf weeds
No more hand weeding: spray the weeds
No more hand weeding: spray the weeds

Where to use

  • Indoors

  • Outdoors

  • Lawn

  • Flower gardens

  • Edible gardens

  • Patios, sidewalks and driveways

  • Building foundations

Effective against

How to use

To refill WEED OUT Lawn Weed Killer with Battery Sprayer

Step 1
Unscrew the cap on top of the battery sprayer container.

Step 2
Remove cap from concentrate bottle.

Step 3
Pour 100mL from the concentrate bottle into the battery sprayer container.

Step 4
Add 900 mL of water into the battery sprayer container.

Step 5
Apply as directed.

 

To apply concentrate with Select-A-Spray Lawn & Garden Sprayer

Step 1
Push valve to OFF.

Step 2
Set dial to 60 mL/L.

Step 3
Pour liquid concentrate into bottle. You don’t need to dilute concentrate with water because the correct amount of water will automatically be mixed to the concentrate by the sprayer attached to hose.

Step 4
Select gentle spray on the front nozzle to obtain precise control of weed control products.

Step 5
Attach hose, screw bottle securely into cap and turn on water.

Step 6
Push valve to ON to start spraying.

Step 7
Wet the foliage of weeds using short bursts of spray. Avoid over applying to the point of runoff.

Step 8
To stop, push valve to OFF.

Step 9
Turn water off at faucet.

Step 10
For hard-to-kill weeds, re-apply after 4 to 6 weeks.


 

Tips

  • Use this product only when weeds are actively growing, because it is not intended to prevent new weed growth.
  • This product can be directly applied to small patches and individual broadleaf weeds as a spot treatment.
  • To maximize effectiveness, this herbicide should be used in conjunction with a sound turf management program. .

Warnings

  • Do not apply to drought-stressed areas or newly seeded lawns
  • Avoid over-applying to the point of runoff.
  • Do not mow lawn until the effect of weed treatment is visible.
  • Do not apply in very hot weather (over 30 ᵒC or 86 ᵒF) or rainy weather, or if rainfall is forecast within the next 2 to 4 hours.
  • Do not water for 2 hours after application.
  • Apply only when weeds are present. Grass that is accidentally treated may temporarily turn brown but will recover.

Do not reuse the empty containers. Dispose of in household garbage. Unused or partially used products should be disposed of at provincially or municipally designated hazardous waste disposal sites.

To prevent contamination, store this product away from food or feed. Keep from freezing.

For additional product information or in case of emergency, spills or fire, call toll-free 1-800-268-2608.

 

General precautions

  • Avoid activities that could result in skin contact with treated lawns or surfaces until product has dried.
  • Do not apply to desirable plants.
  • Do not apply when winds are gusty.

 

Hazards to humans

Can cause irritation to eyes. Can be harmful if ingested.

 

If on skin or clothing

Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes.

 

If in eyes

Hold eye open and rinse slowly and gently with water for 15-20 minutes. Remove contact lenses if present after the first 5 minutes, then continue rinsing eye.

 

If swallowed

Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to by a poison control centre or doctor. Take container, label or product name and P.C.P. Registration Number with you when seeking medical attention.

 

If inhaled

Move person to fresh air. If person is not breathing, call 911 or an ambulance, then give artificial respiration, preferably mouth-to mouth, if possible.

 

In every case, call a poison control centre or doctor for treatment advice.

 

Download safety data sheet link.

4-chloroindole-3-acetic acid, present as potassium salt 4.5 g/L

Frequently asked questions

The active ingredient 4-chloroindole-3-acetic acid is based on a natural plant hormone found in peas and broad bean plants. WEED OUT is a selective herbicide. When sprayed on broadleaf weeds, it triggers the plant to wilt and die.

When used as directed, WEED OUT Concentrate Lawn Weed Killer is safe for people and pets. When spray has dried, people and pets can enter area.

Do not water the lawn within 4 hours of application or when rain is expected. Once WEED OUT Concentrate is applied to a weed, it will take up to 4 weeks for the weed to completely die. WEED OUT Concentrate will not affect or kill weed seeds that have not germinated yet. If a weed seed germinates after WEED OUT Concentrate is applied, an application to this new weed will need to be made.

Visible effects on the weeds (wilting) can be observed within 24 hours of spraying. Weeds will then die over a 4-week period.

WEED OUT Concentrate is effective, giving excellent control of dandelion and plantain and top growth control of fall hawkbit, hawkweed, cinquefoil and black medic in turf.

Recently, concerns have been raised about 2,4-D. WEED OUT Concentrate Lawn Weed Killer doesn’t contain this active ingredient. The active ingredient used in WEED OUT Lawn Weed Killer is based on a natural plant hormone found in peas and broad bean plants. WEED OUT Concentrate Lawn Weed Killer is banned in Manitoba, New Brunswick and Prince Edward Island because some provinces don’t allow the use of concentrate products on lawns. WEED OUT Lawn Weed Killer and WEED OUT Lawn Weed Killer with Battery Sprayer are available in New Brunswick and Prince Edward Island.

No. WEED OUT will have no effect on grass or lawns. Because it is a selective herbicide, it only affects weeds that are listed on the label. Grass that is accidentally treated may temporarily turn brown but will recover.

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