Spectracide® Weed Stop® For Lawns Concentrate (Ready-to-Spray)

Enjoy a beautiful lawn with the Spectracide Weed Stop For Lawns Concentrate (Ready-to-Spray). It kills tough weeds, and it delivers results in just hours. Use it on most lawn types, including Bermuda Grass, Bent Grass, Centipede Grass, Bluegrass, Fescue and Zoysia Grass. If certain tough weeds are not dead within three weeks, repeat treatment. Use of this product when air temperatures are above 85°F may result in lawn damage. Do not water within six hours of treatment. Poor weed control may result if rainfall occurs within six hours of application. For best results, mow lawn before treating weeds.

  • See results in hours
  • Kills more than 200 weed types as listed, including dandelion, chickweed and clover 
  • Treats up to 16,000 sq ft

Active Ingredients

*2,4-D, dimethylamine salt 7.59%
†Mecoprop-p, dimethylamine salt 1.83%
‡Dicamba, dimethylamine salt 0.84%
Other Ingredients: 89.74%
Total: 100.00%
* 0.540 lb. 2,4-D acid equivalent per gallon or 6.30%.
† 0.129 lb. Mecoprop-p acid equivalent per gallon or 1.51%.
‡ 0.059 lb. Dicamba acid equivalent per gallon or 0.69%.
Contains the single isomer form of Mecoprop-p.
  • 32 fl oz
It is a violation of Federal law to use this product in a manner inconsistent with its labeling.

STOP Do not enter or allow entry until sprays have dried.
Precautions and Restrictions: Do not apply this product in a way that will contact workers or other persons either directly or through drift. Only protected handlers may be in the area during application.
Do not use this product on or near desirable plants, including within the dripline of the roots of desirable trees and shrubs, since injury may result. The maximum number of broadcast applications per treatment site is two per year with a minimum of 30 days between applications.
Calculate square feet by multiplying length by width.
1 fl oz = 2 Tbsp (6 tsp); 2 fl oz = 4 Tbsp; 4 fl oz = 1/2 cup; 8 fl oz = 1 cup; 16 fl oz = 1 pint; 32 fl oz = 1 qt
  1. SPRING: The best time to treat weeds is when they are small and growing.
  2. FALL: Many problem weeds germinate in the fall, and treatment then will eliminate many of next year’s weeds.
  • annual yellow sweetclover
  • aster
  • Austrian fieldcress
  • bedstraw
  • beggarticks
  • betony, Florida
  • bindweed, field
  • bird vetch
  • bitter wintercress
  • bittercress, hairy
  • bitterweed
  • black-eyed Susan
  • black medic
  • black mustard
  • blackseed plantain
  • blessed thistle
  • bloodflower milkweed
  • blue lettuce
  • blue vervain
  • bracted plantain
  • brassbuttons
  • bristly oxtongue
  • broadleaf dock
  • broadleaf plantain
  • broomweed
  • buckhorn
  • buckhorn plantain
  • bulbous buttercup
  • bull thistle
  • bullnettle
  • burclover
  • burdock
  • burning nettle
  • burweed
  • buttercup
  • buttonweed
  • Canada thistle
  • Carolina geranium
  • carpetweed
  • catchweed bedstraw
  • catnip
  • catsear
  • chickweed, common
  • chickweed, mouseear
  • chicory
  • cinquefoil
  • clover, crimson
  • clover, hop
  • clover, red
  • clover, strawberry
  • clover, sweet
  • clover, white
  • cockle
  • cocklebur
  • common mullein
  • cranesbill
  • creeping Jenny (creeping Charlie)
  • cudweed
  • curly dock
  • daisy, English
  • daisy fleabane
  • daisy, oxeye
  • dandelion
  • deadnettle
  • dichondra
  • dogbane
  • dogfennel
  • dollarweed
  • elderberry
  • English daisy
  • false dandelion
  • falseflax
  • false sunflower
  • Fiddleneck
  • Filaree
  • fleabane
  • Florida pusley
  • Frenchweed
  • galinsoga
  • goathead
  • goldenrod
  • ground ivy
  • gumweed
  • hairy fleabane
  • hawkweed
  • healall
  • heartleaf drymary
  • heath aster
  • hedge bindweed
  • hedge mustard
  • hemp
  • henbit
  • hoary cress
  • hoary plantain
  • hoary vervain
  • horsenettle
  • jimsonweed
  • knawel
  • knotweed
  • kochia
  • lambsquarters
  • lespedeza
  • mallow
  • matchweed
  • mexicanweed
  • milk vetch
  • morningglory
  • mouseear hawkweed
  • mugwort
  • musk thistle
  • mustard
  • narrowleaf plantain
  • narrowleaf vetch
  • nettle
  • orange hawkweed
  • Oriental cocklebur
  • oxalis
  • parsley-piert
  • parsnip
  • pearlwort
  • pennycress
  • pennywort
  • peppergrass
  • pepperweed
  • pigweed
  • pineywoods bedstraw
  • plains coreopsis (tickseed)
  • plantain
  • poison ivy
  • poison oak
  • pokeweed
  • poorjoe
  • prairie sunflower
  • prickly lettuce
  • prickly sida
  • prostrate knotweed
  • prostrate pigweed
  • prostrate spurge
  • prostrate vervain
  • puncturevine
  • purslane, common
  • ragweed
  • red sorrel
  • redroot pigweed
  • redstem filaree
  • rough cinquefoil
  • rough fleabane
  • Russian pigweed
  • Russian thistle
  • scarlet pimpernel
  • Scotch thistle
  • sheep sorrel
  • shepherdspurse
  • slender plantain
  • smallflower galinsoga
  • smooth dock
  • smooth pigweed
  • soliva
  • sorrel
  • sowthistle
  • spanishneedles
  • speedwell
  • spiny amaranth
  • spiny cocklebur
  • spiny sowthistle
  • spotted catsear
  • spotted spurge
  • Spurweed
  • stinging nettle
  • strawberry, India mock
  • tall nettle
  • tall vervain
  • tansy ragwort
  • tansy mustard
  • tanweed
  • thistle
  • trailing crownvetch
  • tumble mustard
  • tumble pigweed
  • Velvetleaf
  • Venice mallow
  • Virginia buttonweed
  • Virginia creeper
  • Virginia  pepperweed
  • water pennywort
  • wavyleaf  bullthistle
  • western clematis
  • western salsify
  • white mustard
  • wild aster
  • wild buckwheat
  • wild carrot
  • wild four-o’clock
  • wild garlic
  • wild geranium
  • wild lettuce
  • wild marigold
  • wild mustard
  • wild onion
  • wild parsnip
  • wild radish
  • wild rape
  • wild strawberry
  • wild sweet potato
  • wild vetch
  • woodsorrel
  • woolly croton
  • woolly morningglory
  • woolly plantain
  • wormseed
  • yarrow
  • yellow rocket
  • yellowflower pepperweed
  1. Shake container well before using.
  2. Connect a garden hose to the Ready-Spray nozzle. Make sure the dial on the nozzle is in the “OFF” position with the safety tab in the valve notch.
  3. Turn on water at faucet. Extend hose to the farthest area to be treated and work back toward the faucet so you don’t come in contact with the treated area.
  4. To BEGIN spraying, point nozzle toward lawn or plants to be treated and 1.) bend the safety tab (located at right of dial) back and hold, and 2.) using your other hand, QUICKLY turn the dial clockwise until it stops. Water will automatically mix with the product.
  5. Spray until wet to control weeds listed. Walk at a steady pace while spraying, using an even sweeping motion, slightly overlapping treated areas. One quart will treat 16,000 sq ft of southern and 8,000 sq ft of northern grasses. Calculate square feet by multiplying length by width. Refer to sight gauge to guide coverage (example: when bottle is half empty, you should have covered half the area).
  6. To STOP spraying, QUICKLY turn the dial in the opposite direction of “ON” (counterclockwise) until it stops and the safety tab engages into the notch. Turn water off at faucet. To relieve pressure before removing nozzle from hose, bend the safety tab back and turn dial “ON” until water stops spraying.
  7. To STORE unused product, make sure the dial is in the “OFF” position with the safety tab in the valve notch. Place in a cool area away from heat, sunlight or open flame.
(covers 8,000 sq ft) 

(covers 16,000 sq ft) 

Bluegrass, Fescue, Rye, Zoysia
Bahia, Bermuda, Bentgrass, Centipede, St. Augustine
NOTE: Do not use on Floratam variety of St. Augustinegrass in Florida. If you are unsure as to what type of grass you have, contact your County Extension agent.
  • For best results, mow before treating weeds.
  • Do not treat when air temperatures exceed 85°F or damage to grass may occur.
  • Do not water within six hours after treatment. Poor weed control may result if rainfall occurs within six hours of application.
  • For new lawns, treat within 24 hours after seeding. On established lawns, wait three weeks after treatment before re-seeding. Once new grass has started to grow, wait until it has reached a height of 2 inches before treating. Treat as directed for newly sodded lawns if weeds are present.
  • Do not allow spray to get on vegetables or ornamental plants since injury may result. Do not spray around roots of trees and ornamentals. Clover will be damaged if sprayed.
  • Whether using a hose-end sprayer or pressure sprayer, avoid sprays that are too fine because they can drift and damage other plants.
  • If certain tough weeds are not dead within three weeks, repeat treatment. Broadcast application is not necessary; follow spot treatment directions.
  • Use of this product when air temperatures are below 60ºF may result in delayed appearance of weed control. 
Storage: Store in a cool, dry area away from heat or open flame. If product freezes, shake well before use once it has thawed.
Disposal: If empty: Nonrefillable container. Do not reuse or refill this container. Offer for recycling, if available. If partly filled: Call your local solid waste agency for disposal instructions. Never place unused product down any indoor or outdoor drain.
Hazards to Humans and Domestic Animals
CAUTION. Causes moderate eye irritation. Harmful if absorbed through skin. Harmful if swallowed. Avoid contact with skin, eyes or clothing. Wear long-sleeved shirt, long pants, and shoes plus socks. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet.


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. Call a Poison Control Center or doctor for treatment advice.
If on Skin or Clothing: Take off contaminated clothing. Rinse skin immediately with plenty of water for 15-20 minutes. Call a Poison Control Center or doctor for treatment advice.
If Swallowed: Call a Poison Control Center or doctor immediately for treatment advice. Have person sip a glass of water if able to swallow. Do not induce vomiting unless told to do so by a Poison Control Center or doctor. Do not give anything by mouth to an unconscious person.
Have the product container or label with you when calling a Poison Control Center or doctor, or going for treatment. You may also contact 1-800-917-5438 for emergency medical treatment information.
Note to Physician: Probable mucosal damage may contraindicate the use of gastric lavage.

Environmental Hazards
This product may be toxic to fish and aquatic invertebrates and may adversely affect non-target plants. Do not apply directly to water, to areas where surface water is present, or to intertidal areas below the mean high-water mark. Drift and runoff may be hazardous to aquatic organisms in water adjacent to treated areas. Do not contaminate water when disposing of equipment washwaters or rinsate.
This chemical has properties and characteristics associated with chemicals detected in groundwater. The use of this chemical in areas where soils are permeable, particularly where the water table is shallow, may result in groundwater contamination. Application around a cistern or well may result in contamination of drinking water or groundwater.

To the extent required by applicable law, buyer assumes all responsibility for safety and use not in accordance with directions.

Questions & Comments? Call 1-800-917-5438 or visit our website at www.spectracide.com