FenvaStar Plus

Rockwell · Esfenvalerate 8.4% · EPA Reg 71532-26 · INSECTICIDE; MITICIDE Document last checked 2026-05-30

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 71532-26 →

FenvaStar Plus Esfenvalerate 8 4 is a product containing the active ingredient esfenvalerate. It controls a variety of pests including ants, carpenter ants, bedbugs, centipedes, cockroaches, crickets, earwigs, psocids, scorpions, silverfish, spiders, waterbugs, stored food insects, sowbugs, ticks, termites, carpenter bees, old house borers, powder post beetles, furniture beetles, round-headed house borers, and deathwatch beetles. It can be applied indoors as a coarse spray in cracks, crevices, and voids, or diluted with oil for injection into wall and ceiling spaces. Outdoor applications include spot or crack-and-crevice treatments, spraying into wood galleries, or applying a coarse wetting spray to soil, vegetation, foundations, lawns, and turf.

Pests covered (38)

Carpenter AntsAnts (including Carpenter Ants), Bedbugs, Centipedes, Cockroaches, Crickets, Earwigs, Psocids, Scorpions, Silverfish, Spiders, Waterbugs, and Insect Pests of Stored FoodAnts, Cockroaches, Crickets, Sowbugs, Spiders, and TicksAnts, Crickets, Spiders, Centipedes, and Sowbugs (Pillbugs)Exposed/Swarming TermitesCarpenter Bees, Carpenter Ants, Old House Borers, Powder Post Beetles, Furniture Beetles, Round-Headed House Borers, and Deathwatch BeetlesCOCKROACHESASIAN COCKROACHWATERBUGSCRICKETSOLD HOUSE BORERANTSCARPENTER BEERUST RED FLOUR BEETLECONFUSED FLOUR BEETLECADELLEEARWIGSPSOCIDSFLEASSILVERFISHPOWDERPOST BEETLESFURNITURE BEETLECIGARETTE BEETLEDRUGSTORE BEETLEDEATHWATCH BEETLEMEAL MOTH (LARVAE)MEAL MOTH (ADULT)PILLBUGSSOWBUGSCENTIPEDESMILLIPEDESSCORPIONSSPIDERSTICKSBROWN DOG TICKSAWTOOTHED GRAIN BEETLEGRANARY WEEVILRICE WEEVIL

Areas treatable (52)

doors, door frames, windows, and other areas where these ants enter the premises or hide; cracks and crevices; openings or small newly drilled holes into wall voidswall, drop ceiling or other voidtype spaces in structures or equipmentoutside surfaces of buildings, porches, patios, garages and other areas where these pests have been seen or are found12-18 inch band of soil or other substrate adjacent to buildings and the building foundation to a height of 2 to 3 feetwhere swarming termites are seen emerging from wood piles, wooden fence posts, wooden structures, or from the groundexposed pests and to the damaged areas of wood, spraying into galleries or tunnels in the exposed wood; around doors, door frames, windows, and other areas where these pests may enter the house or hide; cracks and crevices; inaccessible wooden structural voidsGROCERIES (WHOLESALE) (INDOOR INEDIBLE)SEWERSPET KENNELS (ENCLOSED PREMISE TREATMENT)APARTMENT BUILDINGS (INDOOR)DOMESTIC DWELLINGS (INDOOR)GARAGESHOSPITALS (INDOOR INEDIBLE)EATING EST PREMISESRESTAURANTSSCHOOLS (OUTDOOR INEDIBLE)BUILDINGS (NONAGRICULTURAL) (PERIMETER) (SOIL TREATMENT)HOTELS/MOTELS/TOURIST COURTS (INDOOR)JANITORIAL EQUIPMENTFOOD MILLSFOOD PACKAGING PLANTSLOCKER ROOMSCOMMERCIAL PREMISESLAUNDRY PREMISESLOCKER ROOM PREMISESOFFICE BUILDINGSTHEATERSFOOD SERVING AREASFOOD STORAGE PREMISESFOOD WAREHOUSESDRAINSWAREHOUSES (INDOOR INEDIBLE)WAREHOUSES (OUTDOOR INEDIBLE)HOTELS/MOTELS/TOURIST COURTS (NON-FOOD AREAS)FOOD PROCESS PLANT PREMISESBAKERIESBAKERY PROCESS PLANT PREMISESBOTTLING PROCESS PLANT PREMISESCANNERY PROCESS PLANT PREMISESDAIRIES (INDOOR INEDIBLE)BATHROOM PREMISESLAVATORIES (PCO)GARBAGE ROOMSGARBAGE STORAGE PREMISESORNAMENTAL LAWNS (FOLIAR TREATMENT)ORNAMENTAL TURF (LAWNS) (FOLIAR TREATMENT)BOXCARS (EMPTY)TRAILERS (EMPTY)RAILROAD BOXCARS (FEED/FOOD-EMPTY) (RESIDUAL GENERAL TREATMENT)OFFICES (INDOOR INEDIBLE)COMMERCIAL/INSTITUTIONAL/INDUSTRIAL BUILDINGS (INDOOR INEDIBLE)SCHOOLS (INDOOR INEDIBLE)

How to treat each type of area 6

doors, door frames, windows, and other areas where these ants enter the premises or hide; cracks and crevices; openings or small newly drilled holes into wall voids

Target pest	Location	Rate	Unit	Dilution	Label notes
Carpenter Ants	Indoor	0.83	fluid ounces	per 1 gallon of water	Apply as a coarse spray

wall, drop ceiling or other voidtype spaces in structures or equipment

Use injection equipment designed for deep void applications. Addition of an IGR is also possible.

Target pest: Ants (including Carpenter Ants), Bedbugs, Centipedes, Cockroaches, Crickets, Earwigs, Psocids, Scorpions, Silverfish, Spiders, Waterbugs, and Insect Pests of Stored Food
Location: Indoor
Dilution: Dilution with oil or pyrethrin-containing oil based products ( 0.5% or 1.0% Pyrethroid should be sufficient)

outside surfaces of buildings, porches, patios, garages and other areas where these pests have been seen or are found

Target pest	Location	Rate	Unit	Dilution	Label notes
Ants, Cockroaches, Crickets, Sowbugs, Spiders, and Ticks	Outdoor	0.83	fluid ounces	per 1 gallon of water	Use at the rate of one (1) gallon per 1,000 square feet; All outdoor applications must be limited to spot or crack-and-crevice treatments only, except for the following permitted uses: 1. Treatment to soil or vegetation around structures. 2. Applications to lawns, turf, and/or vegetations. 3. Applications to building foundations, up to a maximum height of 3 feet.

12-18 inch band of soil or other substrate adjacent to buildings and the building foundation to a height of 2 to 3 feet

Target pest	Location	Rate	Unit	Dilution	Label notes
Ants, Crickets, Spiders, Centipedes, and Sowbugs (Pillbugs)	Outdoor	0.83	fluid ounces	per 1 gallon of water	Apply as a coarse wet spray at the rate of one (1) gallon per 1,000 square feet.

where swarming termites are seen emerging from wood piles, wooden fence posts, wooden structures, or from the ground

Target pest	Location	Rate	Unit	Dilution	Label notes
Exposed/Swarming Termites	Outdoor	0.83	fluid ounces	per 1 gallon of water	Use only as a contact spray to kill emerging reproductive (winged) and worker termites emerging from infested wood. This treatment will control the sprayed termites and will not protect the structure from which the swarm is coming.

exposed pests and to the damaged areas of wood, spraying into galleries or tunnels in the exposed wood; around doors, door frames, windows, and other areas where these pests may enter the house or hide; cracks and crevices; inaccessible wooden structural voids

Target pest	Location	Rate	Unit	Dilution	Label notes
Carpenter Bees, Carpenter Ants, Old House Borers, Powder Post Beetles, Furniture Beetles, Round-Headed House Borers, and Deathwatch Beetles	Outdoor	0.83	fluid ounces	per 1 gallon of water	Apply as a coarse wetting spray

Mixing instructions 1

For pests	Location	Finished strength	Label notes
Ants (including Carpenter Ants), Bedbugs, Centipedes, Cockroaches, Crickets, Earwigs, Psocids, Scorpions, Silverfish, Spiders, Waterbugs, and Insect Pests of Stored Food	wall, drop ceiling or other voidtype spaces in structures or equipment	0.5% or 1.0% Pyrethroid	Dilution with oil or pyrethrin-containing oil based products

Timing & weather

Do not make applications during rain.

Use restrictions 5

Do not spray pets with this product.
Do not spray in or near fish ponds or other bodies of water.
Avoid soaking young or flowering plants.
Do not water the treated area to the point of run-off.
All outdoor applications to impervious surfaces such as sidewalks, driveways, patios, porches, and structural surfaces (such as windows, doors, and eaves) are limited to spot and crack-and-crevice applications only.

Label SDS

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Document text and citations

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