FenvaStar EcoCap

Rockwell · Esfenvalerate · EPA Reg 71532-28-91026 · Insecticide Document last checked 2026-05-30

About this product

Active ingredient Esfenvalerate

Manufacturer Rockwell

Category Insecticide

Full details for FenvaStar EcoCap

Source product label ↗ Open the catalog source label while the local copy is reviewed. Verify the product name, EPA registration number, and revision before use. EPA registration data Reg. 71532-28-91026 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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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. 71532-28-91026 →

FenvaStar EcoCap is a Group 3 insecticide containing 3.5% Esfenvalerate. It is a microencapsulated suspension designed to provide residual activity against a wide range of pests, including crawling insects (ants, bedbugs, cockroaches, etc.), flying insects (flies, mosquitoes), and stinging insects (wasps, hornets). It can be used in both indoor and outdoor settings, including residential structures, commercial buildings, and food processing/handling establishments (excluding areas where livestock is fed). The product is applied via spray to surfaces, cracks, crevices, or as a spot/crack and crevice treatment. It can also be used in tank mixes with certain insect growth regulators like NyGuard® IGR. Users should note that it is combustible and should not be applied near electrical equipment due to shock hazard. It is important to avoid spraying near fish, birds, or water bodies, and to follow specific restrictions regarding food contact surfaces and livestock areas.

Pests covered (4)

Crawling Insects (Ants, Bedbugs, Cockroaches, etc.)Flying Insects (Flies, Mosquitoes)Stinging Insects (Wasps, Hornets)Ants, Aphids, Bees, Beetles, Boxelder Bugs, Caterpillars, Centipedes, Cockroaches, Earwigs, Fleas, Flies, Fungus Gnats, Gnats, Hornets, Lice, Millipedes, Mites, Mosquitoes, Moths, Pillbugs, Scale Insects, Scorpions, Silverfish, Spiders, Stink Bugs, Termites, Ticks, Wasps, Weevils, Whiteflies

Areas treatable (3)

Floors, baseboards, cracks, crevices, walls, ceilings, etc.Walls, ceilings, screens, windows, doors, light fixturesNests

How to treat each type of area 3

Floors, baseboards, cracks, crevices, walls, ceilings, etc.

Light to Heavy

Target pest	Location	Rate	Dilution	Label notes
Crawling Insects (Ants, Bedbugs, Cockroaches, etc.)	Both	Not specified for all pests	0.025% to 0.050% active ingredient	Apply as a course, wet spray or spot/crack and crevice treatment.

Walls, ceilings, screens, windows, doors, light fixtures

Target pest	Location	Rate	Dilution	Label notes
Flying Insects (Flies, Mosquitoes)	Both	Not specified	0.025% active ingredient	Apply to surfaces where pests are attracted.

Nests

Target pest	Location	Rate	Label notes
Stinging Insects (Wasps, Hornets)	Outdoor	Not specified	Apply to nests late in the evening or when insects are at rest.

Mixing instructions 2

For pests	Amount	Per	Finished strength	Label notes
General use	1.0 fl. oz.	per gallon of water	0.025% active ingredient	Agitate well after adding.
Heavy infestations	2.0 fl. oz.	per gallon of water	0.050% active ingredient	Agitate well after adding.

Worker safety

PPE required Wear protective eyewear. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, or using tobacco.

Timing & weather

Do not apply when rain is not predicted for the next 24 hours.
Apply stinging insect treatments in the evening or when insects are at rest.

Use restrictions 7

Do not apply in plant rooms or rooms occupied by patients, the elderly, or infirm.
Do not apply in classrooms.
Do not apply in areas where livestock is fed.
Do not apply directly to food or food-contact surfaces.
Do not apply near fish, birds, or water bodies.
Do not apply near electrical equipment due to shock hazard.
Do not apply in electrical conduits, junction/switch boxes, or motor housings.