Insecticides

Bermudagrass lawns can host a variety of insects and pests that can be detrimental to the health of the grass. Some common insects found in bermudagrass include:

Armyworms: These caterpillars feed on the leaves and can quickly strip a lawn of its foliage.

Bermudagrass Mites: Tiny mites that cause the grass to become stunted and form witch’s brooms (tufts of stunted growth). For more on dealing with mites, see our dedicated post about mites.

White Grubs: The larvae of various beetles that feed on the roots of the grass, leading to patches of dead or dying turf. For more on dealing with grubs, see our post about grubs.

Types of Insecticides

TypeSummaryExamples of Active Ingredients
PyrethroidsSynthetic chemicals modeled after natural pyrethrins, effective against a wide range of insects.Bifenthrin, Permethrin, Cyfluthrin, Deltamethrin
NeonicotinoidsTarget the nervous system of insects, particularly effective against sucking insects.Imidacloprid, Thiamethoxam, Acetamiprid
OrganophosphatesAffect the nervous system of insects, used for a variety of pests but with safety concerns.Malathion, Chlorpyrifos
CarbamatesSimilar action to organophosphates, impacting the nervous system with varied pest targets.Carbaryl, Methomyl
Insect Growth Regulators (IGRs)Disrupt the growth and reproduction of insects, suitable for long-term control.Methoprene, Pyriproxyfen
Biologicals and BotanicalsNatural substances and organisms, offering specific targeting with reduced environmental impact.Bacillus thuringiensis (Bt), Spinosad

Best Insecticide for Bermuda Grass

Bifenthrin, or “bifen” for short, commonly found in products marketed under the name Talstar P among others, is one of the more popular choices for home use on bermudagrass, primarily because of its broad-spectrum effectiveness and relatively low toxicity to mammals. It targets a wide range of lawn pests, including several that commonly affect bermudagrass such as armyworms, chinch bugs, and sod webworms. Bifenthrin is often a recommended choice due to its effectiveness against a variety of pests without severely affecting beneficial insects when used correctly.

PestEffective with Bifenthrin?
ArmywormsYes
Bermudagrass MitesPartially, see here.
White GrubsNo, see here.
Chinch BugsYes
CutwormsYes
Mole CricketsYes but imidacloprid or fipronil usually gives longer control.
Sod WebwormsYes
MosquitosYes
TicksYes

Order Bifenthrin here from Amazon

Most Safe Around Pets and Kids

For insecticides that are safer around children and pets while treating Bermudagrass lawns, consider using Insect Growth Regulators (IGRs) like Methoprene and Pyriproxyfen, which specifically target the development of insect larvae with minimal risk to mammals. However, there’s still some risk if misused or overapplied, so always follow label directions carefully.

Spinosad, a naturally derived product from soil bacteria, is also a safe choice, effective against caterpillars and some beetles while being less toxic to non-target species. Lastly, Bacillus thuringiensis (Bt) offers a highly specific action against caterpillar pests and is safe for use around both pets and children, posing no significant threat to mammals or birds. Always apply these products according to label instructions for the safest and most effective results.

Targeting Specific Pests

Common Lawn PestSafest ProductMost Effective Product
ArmywormsBacillus thuringiensis (Bt)Spinosad or Bifenthrin
Chinch BugsBifenthrinImidacloprid or Acephate
Sod WebwormsSpinosadBifenthrin
Mole CricketsBifenthrinFipronil or Imidacloprid
CutwormsBacillus thuringiensis (Bt)Bifenthrin
Common AntsBifenthrinBifenthrin or Fipronil
Red Imported Fire AntsSpinosad-based baitIndoxacarb or Hydramethylnon bait
Nest-building WaspsPermethrin (applied to nests)Cypermethrin or Wasp freeze sprays
Wood-boring Carpenter BeesCypermethrinCypermethrin or Dust formulations
Mosquitoes (Larvae)Bacillus thuringiensis israelensis (Bti)Bti or Methoprene
Ticks in LawnsPermethrinBifenthrin
Flea BeetlesPyrethroids (e.g., Bifenthrin)Bifenthrin
AphidsNeem oil or Insecticidal soapImidacloprid or Pyrethroids
Scale InsectsHorticultural oilImidacloprid
ThripsSpinosad or Insecticidal soapSpinosad
LeafhoppersPyrethroids (e.g., Permethrin)Permethrin
Japanese Beetles (Adults)CarbarylCarbaryl or Bifenthrin
BillbugsImidaclopridImidacloprid or Bifenthrin
Crane Flies (Larvae)None clearly labeledCyfluthrin or Chlorantraniliprole
Lawn Moths (Adult Stage)PyrethroidsBifenthrin or Lambda-cyhalothrin
Basic mosquito control: Talstar P (Bifen) with a Stihl SR200 mister. Photo by John Hill.


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2 responses to “Insecticides”

  1. PK Avatar
    PK

    For Mole Crickets in the first table it says “Bifenthrin” is NOT effective. However in the 2nd table (Targeting Specific Pests) for Mole Cricket here is says “Bifenthrin” IS effective. please clarify/revise above tables

    1. Dallas Lawn Guy Avatar
      Dallas Lawn Guy

      Oops, thanks. Corrected!

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