Dismiss Herbicide
Dismiss Herbicide

Dismiss Herbicide

FMC TECHNOLOGIES

Dismiss Herbicide

Dismiss Herbicide is a selective, post-emergent herbicide which contains the active ingredient Sulfentrazone and is regarded as one of the best herbicides for sedge weed control in residential and commercial turf. Problematic sedges such as Green Kylinga and Yellow Nutsedge can be eliminated in as quickly as one to two days with a Dismiss application.
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Dismiss Herbicide Product Page
Min : 85.37 - Max : 489.99
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Dismiss Turf Herbicide, manufactured by FMC Professional Solutions, is a selective post-emergent herbicide for control of a variety of broadleaf weeds and sedges in healthy turf areas. 

This product is a flowable (suspension concentrate) containing 4 lbs of active ingredient per gallon. The mode of action of Dismiss herbicide involves uptake by both weed roots and shoots.

Not only does Dismiss Herbicide attack the surface of the weeds but it goes even further, getting into the soil to penetrate the sedge tubers. This penetrating soil action helps to prevent future outbreaks of sedges.

Tools Needed

To use Dismiss Herbicide, you will need either a handheld pump sprayer, backpack sprayer, or spray rig. For small lawn jobs, we recommend a handheld 1-gallon pump sprayer or a 4-gallon backpack sprayer.

How to Use

Selective Herbicide

  • Step 1: Determine how much Dismiss Herbicide you need by calculating the square footage of the treatment area. To do this, measure and multiply your lawn's length x width to get the total square footage to be treated. Dismiss should be mixed at a rate of 0.18 to 0.275 oz. per 1,000 square feet in 0.5 to 4 gallons of water on warm-season grass or at a rate of 0.092 to 0.18 oz. per 1,000 square feet in 0.5 to 4 gallons of water for warm-season grass.
  • Step 2:  Fill your selected spray tank a 1/4th of the way with water and then add the appropriate amount of Dismiss Herbicide. Fill the sprayer the rest of the way with water and shake well and you are ready to spray.
  • Step 3: Spray target weeds until wet but not to the point of runoff. A good technique to put into practice is to avoid side-to-side movement of the nozzle when spraying as it is best to spray the nozzle directly with no movement close to the weeds to ensure proper application.

Where to Use

Dismiss Herbicide is for use in and around commercial and residential turf including golf courses, lawns, sports fields, cemeteries, parks, campgrounds, recreational areas, roadsides, school grounds and sod farms.

When to Use

Apply Dismiss Herbicide on mild days when wind speeds are low to minimize drift. It is best to apply Dismiss when turfgrasses are under minimal stress and not weakened by weather, mechanical, chemical, disease or other related stress. For most effective results against most weed species, time your application when the weeds are young and actively growing. For longer residual control or heavier sedge populations, a second application 30 days following the first may be needed for optimum control.

Safety Information

Dismiss Herbicide is safe to use around children and pets when applied according to the product label instructions. Always wear the appropriate personal protective equipment (PPE) when handling and applying this product.

Do not allow people and pets to enter treatment area until spray has dried.

Special Considerations

The use of surfactants is not recommended with Dismiss Herbicide. 

AvailabilityOnline
Restricted UseNo
Shipping Restrictions6 Ounce: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
64 Ounce: AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
BrandFMC TECHNOLOGIES
Keith's Pro Tips"Put your sprayer nozzle on a fan spray setting to get even coverage of Dismiss Herbicide on the plants you want gone."
Product DrawbacksSince it is a suspended herbicide, Dismiss Herbicide mixtures may require you to constantly agitate the sprayer tank for best results.
Target PestsDismiss Turf Herbicide can control or suppress Annual Spurge, Bittercress, Black Medic, Buckhorn Plantain, Buttercups, Carolina Geranium, Carpetweed, Catchweed Bedstraw, Cinqufoil, Clover, Common Chickweed, Common Groundsel, Common Lambsquarters, Common Lespedeza, Common Mallow, Common Purslane, Copperleaf, Creeping Woodsorrel, Cudweed, Curly Dock, Cylindric Sedge, Dandelion, Dollarweed, Eclipta, Evening Primrose, False Green Kyllinga, Fiddleneck, Filaree, Florida Beggarweed, Florida Pusley, Galinsoga, Globe Sedge, Goldenrod, Goosegrass, Green Kyllinga, Ground Ivy, Henbit, Johnny-Jump-Up Violet, Knawel, Kochia, Lawn Burweed, London Rocket, Mouseear Chickweed, Parsley Piert, Pennsylvania Smartweed, Pineapple weed, Prostrate Knotweed, Prostrate Spurge, Puncture Weed, Purple Nutsedge, Red Sorrel, Redroot Pigweed, Redweed, Shepard's Purse, Smooth Pigweed, Speedwell, Spotted Spurge, Star of Bethleham, Surinam Sedge, Texas Sedge, Tumble weed, Velvetleaf, Wild Garlic, Wild Onion, Wild Violet, Yellow Nutsedge, and Yellow Woodsorrel.
Application EquipmentBackpack Sprayer, Hose End Sprayer, Pump Sprayer
Application MethodsBroadcast Spray, Spot Treatment
Active IngredientSulfentrazone 39.6%
Product TypeHerbicide
FormulationEmulsifiable Concentrate (EC)
Application RateMix Dismiss Turf Herbicide at a rate of 0.18-0.275 of an ounce per 1,000 square feet or 1 gallon of water for broadleaf weed control. Maximum rate of 4-8 ounces per acre.
Shelf LifeDismiss Turf Herbicide has a shelf life of up to 2 years if stored properly according to the label.
YieldEach finished gallon of Dismiss Turf Herbicide should cover approximately 1,000 square feet.
Use SitesOutdoors
Time to KillDismiss Turf Herbicide begins to kill immediately as soon as the target weeds are contacted by the chemical, but may take up to several weeks to completely kill off unwanted vegetation.
Comparable ProductsExpel Herbicide, Sulfentrazone 4F, Surge Herbicide, Sulfentrazone 4SC
Incompatible Home SidingBrick, Hardie Plank, Stone Veneer, Wood, Vinyl
EPA Registration #279-3295
4.8/5
Based on 8 reviews
  • 75%(6)
  • 25%(2)
  • 0%(0)
  • 0%(0)
  • 0%(0)
100%
9/3/22
Allen G.
Verified Buyer
Works very well. Highly effective. One application killed my nutsedge.
80%
6/12/18
Kevin M.
Verified Buyer
So far so good
Only used it once but it definitely smoked the Killinga I bought it to spray on.
100%
7/4/15
Gabriel
Verified Buyer
Effective product
This is the only product we've found that is truly effective on clover in a buffalograss lawn.
80%
8/8/14
Emilio
Verified Buyer
worth the effort
After using other weed killers, Dismiss did kill the nut-grass but left the yard in a combat zone. St Augustine plugs are not growing even when Miloganite was applied but the unaffected grass area is growing well.
100%
4/21/13
George
Verified Buyer
Driving Range
I have used this product for my driving range several times and it does what I am looking for very pleased with the results I got.
100%
4/21/13
Gage
Verified Buyer
Lawn
Had a neighbor recommend this product and after using it I wont be using anything else!
100%
4/17/13
Evan
Verified Buyer
crabgrass
Wiped out my issue Ive had with crabgrass for a while now. Nothing at home depot was working and after using this product wont ever use anything else!!
100%
4/16/13
Emma
Verified Buyer
suprised
I am very suprised at how well this product worked in a site prep area in which we treated gave very quick results.
More Information
Restricted Use No
Shipping Restrictions AK, CA, CT, HI, IN, MI, NY, OR, RI, SC, VT, WA
Availability Online
Signal Word CAUTION
Keith's Pro Tip "Put your sprayer nozzle on a fan spray setting to get even coverage of Dismiss Herbicide on the plants you want gone."
Target Pests Multi Annual Spurge, Bittercress, Black Medic, Buckhorn Plantain, Buttercup, Carolina Geranium, Carpetweed, Catchweed Bedstraw, Cinquefoil, Clover, Common Chickweed, Common Groundsel, Common Lambsquarters, Common Lespedeza, Common Mallow, Common Purslane, Copperleaf, Creeping Woodsorrel, Cudweed, Curly Dock, Cylindric Sedge, Dandelion, Dollarweed, Eclipta, Evening Primrose, False Green Kyllinga, Fiddleneck, Filaree, Florida Beggarweed, Florida Pusley, Galinsoga, Globe Sedge, Green Kylinga, Henbit, Knawel, Kochia, Lawn Burweed, London Rocket, Mouseear Chickweed, Parsley Piert, Pennsylvania Smartweed, Pineapple_Weed, Prostrate Spurge, Prostrate_Knotweed, Puncture Weed, Purple Nutsedge, Red Sorrel, Redroot Pigweed, Redweed, Shepherdspurse, Smooth Pigweed, Speedwell, Spotted Spurge, Spurweed, Star of Bethlehem, Surinam Sedge, Texas Sedge, Tumble Pigweed, Velvetleaf, Violet Johnny-jump-up, Wild Garlic, Wild Onion, Yellow_Nutsedge, Yellow_Woodsorrel, Goldenrod, Ground Ivy, Wild Violet
Time to Kill Dismiss Turf Herbicide begins to kill immediately as soon as the target weeds are contacted by the chemical, but may take up to several weeks to completely kill off unwanted vegetation.
Chemical Type Herbicide
Formulation Emulsifiable Concentrate (EC)
Application Methods Broadcast Spray, Spot Treatment
Product Drawbacks Since it is a suspended herbicide, Dismiss Herbicide mixtures may require you to constantly agitate the sprayer tank for best results.
Active Ingredient Sulfentrazone 39.6%
Application Equipment Backpack Sprayer, Hose End Sprayer, Pump Sprayer
Mix Rate Mix Dismiss Turf Herbicide at a rate of 0.18-0.275 of an ounce per 1,000 square feet or 1 gallon of water for broadleaf weed control. Maximum rate of 4-8 ounces per acre.
Low Use Rate 0.092 oz./1,000 sq. ft.
High Use Rate 0.27 oz./1,000 sq. ft.
Use Sites Outdoors
Yield Each finished gallon of Dismiss Turf Herbicide should cover approximately 1,000 square feet.
EPA Registration No. 279-3295
Shelf Life Dismiss Turf Herbicide has a shelf life of up to 2 years if stored properly according to the label.
Comparable Products Expel Herbicide, Sulfentrazone 4F, Surge Herbicide, Sulfentrazone 4SC
Children or pets? No
Property Characteristics None
Questions and Answers
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  1. Q:Spray with dismiss kills it but it comes back in same spots the following year?
    10/1/23
    A:Dismiss Herbicide is a post-emergent herbicide meaning it will only kill weeds that are above the ground for up to 60 days. You will need a pre-emergent herbicide to kill any weed seeds growing under the soil, which is why you are seeing in the same spots the following year.

    Amanda Chavez

    10/2/23
    Certified Buyer
  2. Q:Is Dismiss safe for children and pets?
    11/5/21
    A:Dismiss Herbicide is safe to use around children and pets when applied according to the product label instructions. Always wear the appropriate personal protective equipment (PPE) when handling and applying this product. Do not allow people and pets to enter treatment area until spray has dried.

    Amanda Chavez

    11/8/21
    Certified Buyer
  3. Q:Should I expect injury to my centipede after using Dismiss?
    9/15/21
    A:You may experience slight yellowing; but, it did not hurt the centipede.

    Michael Panaro

    9/16/21
    Certified Buyer
  4. Q:Does dismiss turf herbicide kill burweed?
    3/29/21
  5. Q:Will dismiss kill dandelions?
    3/9/21
    A:Yes.

    Matthew R. Vetera

    7/9/18
    Certified Buyer
  6. Q:can this be applied with hose end sprayer?
    9/4/20
    A:No. It has to be mixed in a container.

    Beth Armstrong

    9/9/20
    Certified Buyer
  7. Q:How does dismiss work?
    6/1/20
    A:Short answer? You mix it according to the label, spray it on the weeds you want gone, and the Sulfentrazone kills the weeds. Easy. Long answer? Dismiss active ingredient is Sulfentrazone. It controls weeds by disrupting membranes and inhibits photosynthesis in plants commonly known as PPO (Protoporphyrinogen oxidase) Inhibition. Sulfentrazone is received in the plants through the roots of the plants. As the plants come out of the soil , they die after exposure to light. It also works as a foliar contact causing rapid desiccation or removal of moisture from the plant, in essence - "burning" the plant.

    Matthew R. Vetera

    6/1/20
    Certified Buyer
  8. Q:What temps can I spray in?
    8/20/19
    A:Definitely wouldn't spray over 90 degrees with high relative humidity.. Safely, between 50 and 85.

    Matthew R. Vetera

    8/20/19
    Certified Buyer
  9. Q:how long after application can I reseed with fescue?
    8/21/18
    A:Application to reseeded, overseeded or sprigged areas: Reseeding, overseeding or sprigging of treated areas within one (1) month after application of this product could inhibit the establishment of desirable turfgrasses. Overseeding of bermudagrass with perennial ryegrass at two (2) to four (4) weeks after an application can be done if slight injury to perennial ryegrass can be tolerated. Best results are obtained for reseeding or overseeding when mechanical or power seeding equipment (slit seeders) are used to give good seed to soil contact and proper soil cultivation, irrigation and fertilization practices are followed

    Camille Landry

    8/24/18
    Certified Buyer
  10. Q:When can I re-apply?
    8/11/18
    A:You will want to follow the maximum rate per acre recommendations found on the label, you would not want to reapply any sooner than 14 days.

    Camille Landry

    8/13/18
    Certified Buyer
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