BC-Banned-Second-Generation-Anticoagulant-Rodenticides-for-Residential-Use (Home Systems)

BC Banned Second-Generation Anticoagulant Rodenticides for Residential Use

idea

Claim: Since January 21, 2023, BC homeowners and most commercial operators cannot legally buy or use second-generation anticoagulant rodenticides (SGARs) — including brodifacoum, bromadiolone, and difethialone. The ban exists because SGARs accumulate in rodent tissue and secondarily poison the raptors and pets that eat poisoned rodents. Snap traps and first-generation rodenticides remain legal alternatives.

Mechanism

• SGARs work by blocking vitamin K recycling in the target animal, causing internal bleeding over several days. During this period, the poisoned rodent is lethargic, moves slowly, and is easy prey for hawks, owls, eagles, and domestic pets.
• The SGAR accumulates in the rodent’s liver tissue. An owl that eats multiple SGAR-poisoned rats ingests a cumulative dose — secondary poisoning kills raptors that are not the intended target.
• BC implemented an 18-month emergency ban in July 2021, then made the restriction permanent effective January 21, 2023 under the Integrated Pest Management Regulation (Schedule 6).
• The active ingredients now prohibited for residential and most commercial use:
  • Brodifacoum
  • Bromadiolone
  • Difethialone
• Exemptions apply to essential services only: health facilities, emergency response, utilities (electricity, water, gas), agricultural operators, food facilities, transportation infrastructure, waste management, and communications systems. Even essential services face limits: 35 consecutive days maximum per baiting cycle, 120 days total annually.
• First-generation anticoagulants (e.g. diphacinone, chlorophacinone) are still legal for residential use but are still not preferred — they also carry wildlife risk, require multiple feedings, and should be used as a last resort per BC government guidance.
• Snap traps are the recommended first-line mechanical method — effective, immediate, no toxicant risk, and compliant with BC restrictions.

Scope — what this does NOT cover

• This restriction applies to BC only. Other provinces have different regulations.
• Pest control companies that serve essential-service clients may still carry and use SGARs under the exemption — confirm with any company you hire whether they use SGARs and whether that is appropriate for a residential property.
• This note does not cover first-generation rodenticide details, bait station requirements, or product-specific application rules.

Sources

• Province of BC, BC government — SGAR restrictions permanent since January 21, 2023; exempted active ingredients; essential services list; usage limits — https://www2.gov.bc.ca/gov/content/environment/pesticides-pest-management/legislation-consultation/rodenticide-ban
• BC government news release, 2022 — province establishing permanent rodenticide restrictions; wildlife protection rationale — https://news.gov.bc.ca/releases/2022ENV0065-001610

Idea Compass

North: Where this comes from

• pest-rodents (Home Systems) — the parent component note
• BC Integrated Pest Management Regulation, Schedule 6 — the governing regulation

East: Tensions / failure

• The secondary-poisoning problem — the wildlife harm that motivates the ban is ongoing; even where exemptions apply, SGAR use is regulated to limit accumulation
• Snap-trap vs toxicant tradeoff — snap traps require more frequent checking but carry no wildlife risk

South: Where this leads

• pest-rodents (Home Systems) § snap trap procedure — the compliant residential alternative
• vendor-roster (Home Systems) — when hiring a pest control company, verify they are not using SGARs on a residential property

West: What’s similar

• pest-prevention (Home Systems) — sanitation and exclusion as the non-chemical upstream alternative
• Other BC pesticide restriction frameworks (e.g. cosmetic pesticide restrictions for lawns) — same regulatory pattern: wildlife harm justifies residential ban with essential-services exemption