Pyrethroids

A class of synthetic insecticides chemically similar to natural pyrethrins, widely used in agriculture, biocides, and consumer products, subject to scrutiny for aquatic toxicity and neurotoxicity.

Foresight tracks Pyrethroids developments and surfaces the alerts most likely to matter before they turn into missed deadlines, recalls, or escalation work.

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Last updated

5 April 2026, 18:35

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Latest Pyrethroids developments

Source-backed regulatory and guidance signals tracked by Foresight, with the newest developments first.

California State Water Board To Consider Approval of Pyrethroid TMDLs for Alamo and New Rivers (Imperial County)

California's State Water Board is set to approve strict new discharge limits for six pyrethroid pesticides in the Colorado River Basin region in May 2026. Impacted agricultural and industrial facilities must prepare for tighter NPDES permit conditions and enhanced monitoring to meet numeric water quality targets.

waterboards.ca.govUnited StatesUnited States

Norway Consults on Amendments to Biocides Regulation to Implement New EU Active-Substance Decisions

Norway is aligning its Biocides Regulation with EU decisions, extending several substance approvals while setting a September 2026 phase-out for etofenprox. Companies must manage the withdrawal of etofenprox-treated articles and meet new 2027 authorization deadlines for formaldehyde-releasers to maintain Norwegian market access.

hss.miljodirektoratet.noNorwayNorway

Italy: Autonomous Province of Bolzano Bans Bee-Harmful Pesticides During Flowering for Apple Varieties

The Autonomous Province of Bolzano has prohibited 15 bee-harmful active substances in pesticides during the flowering of specific apple varieties starting March 2026. Companies must ensure regional pest management strategies and product applications align with these localized pollinator protection mandates and seasonal usage windows.

agricoltura.provincia.bz.itItalyItaly

EFSA Publishes Consultation Outcome on Cypermethrin Risk Assessment Under EU Pesticides Regulation

EFSA has concluded its technical review of confirmatory data for the insecticide cypermethrin. The findings will serve as the primary scientific basis for upcoming EU decisions on whether to restrict or modify the substance's current market approval.

efsa.europa.euEuropean UnionEuropean Union

Netherlands Ctgb Updates Biocide and Plant Protection Product Authorisations

The Dutch Ctgb has updated the authorisation status for several biocidal and plant protection products, including new registrations for insecticides and extensions for various herbicides and fungicides. Companies should audit their portfolios against these revised expiry dates and withdrawal schedules to ensure continued market access and manage the phase-out of specific active substances.

zoek.officielebekendmakingen.nlNetherlandsNetherlands

California DPR Proposes Denial of Dynatrap (Transfluthrin) — PRO-2402340

California regulators have proposed denying registration for a transfluthrin-based mosquito repellent trap citing inadequate data or potential environmental risks. This decision underscores the high evidentiary bar for pesticide approvals in California and signals significant market access hurdles for products with incomplete environmental safety profiles.

apps.cdpr.ca.govUnited StatesUnited States

New Zealand EPA Publishes Q2 2025–26 Hazardous Substances Application Performance Report

New Zealand has revoked approvals for the herbicide DCPA and advanced its reassessment pipeline for high-concern pesticide groups. Impacted firms must finalize disposal by June 2026 and anticipate further regulatory tightening for synthetic pyrethroids and neonicotinoids.

epa.govt.nzNew ZealandNew Zealand

EFSA Issues Article 43 Statement Reviewing Lambda‑Cyhalothrin MRLs

EFSA has recommended lowering Maximum Residue Levels for lambda-cyhalothrin following a targeted safety review identifying acute dietary exposure risks. Businesses should anticipate stricter compliance thresholds for food and feed commodities as the European Commission prepares to codify these recommendations into binding law.

efsa.europa.euEuropean UnionEuropean Union

Canada PMRA Opens Consultation on Etofenprox Premise Sprays (PRD2026-04)

Health Canada is consulting on the proposed registration of etofenprox-based premise sprays for structural and transport pest control through April 2026. The proposal signals an expansion of approved biocidal tools for facility management and logistics, pending final health and environmental risk assessments.

canada.caCanadaCanada

EU EFSA Registers Intake of Esfenvalerate MRL Application for Olives

EFSA has initiated the assessment of a new Maximum Residue Level application for the insecticide esfenvalerate on olives. This signals a potential revision of residue limits that could impact compliance requirements and market access for olive-based products in the European Union.

open.efsa.europa.euEuropean UnionEuropean Union

EU ECHA Adds CLH Intentions for Azoxystrobin and Alpha-Cyano-3-Phenoxybenzyl Ester and CLH Proposal for Acequinocyl

ECHA has formally initiated the harmonized classification and labeling process for azoxystrobin, alpha-cyano-3-phenoxybenzyl ester, and acequinocyl. Future hazard classifications will necessitate mandatory labeling revisions and could restrict or revoke existing authorizations for biocidal and plant protection products.

echa.europa.euEuropean UnionEuropean Union

Slovenia Recalls Kaki Fruit Over Lambda-Cyhalothrin Residues

Slovenia has recalled Spanish-origin kaki fruit following the detection of lambda-cyhalothrin residues exceeding legal limits. This enforcement action highlights the continued scrutiny of pesticide MRL compliance in EU cross-border trade and the speed of RASFF-driven market withdrawals.

gov.siSloveniaSlovenia

Taiwan Ministry of Environment Issues Guidance on Ventilation and Safe Use of Mosquito Coils

Taiwan's Ministry of Environment issued guidance on March 4, 2026, clarifying ventilation and safe-use requirements for mosquito coils and liquid repellents. This signals increased regulatory scrutiny on consumer exposure and indoor air quality, necessitating that manufacturers ensure label instructions clearly address ventilation and species-specific toxicity risks.

enews.moenv.gov.twTaiwanTaiwan

EU Notifies Revised Draft MRLs for Alpha-Cypermethrin and Cypermethrin

The European Union has proposed lower Maximum Residue Levels for alpha-cypermethrin and cypermethrin with a comment deadline of May 2026. Stricter limits and new separate substance reporting requirements necessitate immediate supply chain compliance reviews to maintain EU market access for food commodities.

eping.wto.orgEuropean UnionEuropean Union

EU Commission Repeals Etofenprox Biocidal Approval Postponements (Implementing Decision (EU) 2026/379)

The European Commission has repealed approval extensions for the biocidal active substance etofenprox in wood preservatives and insecticides effective March 2026. Businesses must accelerate phase-out strategies and secure alternative formulations as the substance loses its legal basis for market access in the EU.

eur-lex.europa.euEuropean UnionEuropean Union

Northern Ireland: HSE Highlights EU BPR Deadlines For Selected Biocidal Active Substances

Approaching EU Biocidal Products Regulation deadlines for Northern Ireland require active substance renewals by August 2026 and product authorisations by February 2027. Impacted businesses must secure these approvals to prevent the mandatory withdrawal of specific disinfectants, insecticides, and treated articles from the market.

content.govdelivery.comUnited KingdomUnited KingdomEuropean UnionEuropean Union

Netherlands: State Secretary Grants Temporary K-Othrine SC7.5 Exemption for Bluetongue Vector Control under the Biocidal Products Regulation

The Netherlands has granted a temporary emergency exemption for the biocidal product K-Othrine SC7.5 to combat bluetongue vectors through June 2026. Affected operators must strictly adhere to application protocols and residue limits to maintain compliance and food safety standards during this derogation period.

zoek.officielebekendmakingen.nlNetherlandsNetherlands

EU Commission Implementing Decision Postpones Expiry of Permethrin Approval for Biocidal Product-Types 8 and 18

The European Commission has extended the approval of permethrin for wood preservatives and insecticides until October 2028 to allow for a full regulatory re-evaluation. This administrative extension provides temporary market stability for biocidal product manufacturers while the long-term safety and efficacy assessment continues.

eur-lex.europa.euEuropean UnionEuropean Union

Commission Implementing Decision C(2026)821 Postpones Expiry of Alpha‑Cypermethrin Approval for Biocidal Product‑Type 18

The European Commission has extended the approval of alpha-cypermethrin for insecticide biocidal products until the end of 2028. This extension provides regulatory certainty and maintains market access for existing products while the long-term renewal evaluation is finalized.

eur-lex.europa.euEuropean UnionEuropean Union

US EPA Issues Cancellation Order for Certain Pesticide Product Registrations

The US EPA has finalized the cancellation of numerous pesticide registrations effective February 2026 following voluntary registrant requests. Impacted companies must manage domestic stock clearance within 12-to-18-month windows before distribution is restricted to export or disposal.

public-inspection.federalregister.govUnited StatesUnited States

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Topic context

How to read Pyrethroids regulatory activity

Definition

What is Pyrethroids?

A class of synthetic insecticides chemically similar to natural pyrethrins, widely used in agriculture, biocides, and consumer products, subject to scrutiny for aquatic toxicity and neurotoxicity.

Industry relevance

Why it matters

Pyrethroids developments can change product scope, supplier expectations, market access, reporting duties, and risk ownership. Foresight tracks the signals early so teams can respond before obligations become urgent.

Foresight tracking

How Foresight monitors it

Foresight monitors official sources, extracts structured regulatory intelligence, and maps alerts to a customer's products, substances, markets, and priorities so teams see the relevant signal with source evidence for review.

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