I N C E P T I O N A I
  1. Pet supplies
  2. Horses
  3. Stable bedding barn supplies
  4. Barn pest control rodent management
  5. Insect growth regulators larvicides

2025 Canadian Guide: Top 5 Insect Growth Regulators and Larvicides — Evidence-Based Picks for Safer, Long-Term Pest Control

Published on Thursday, August 21, 2025

Chemical and biological insect growth regulators (IGRs) and larvicides interrupt insect life cycles to prevent infestations of flies, moths and stored-product pests. In Canadian markets, these products appeal to consumers and pest managers because they offer targeted application, reduced need for broad-spectrum spraying, and techniques that support resistance management and lower environmental impact. Buyers increasingly prioritize products that are Health Canada PMRA-registered, easy to apply (dunks, bits, concentrates, point-source devices), compatible with integrated pest management (IPM), and demonstrably safe around people, pets and non-target wildlife. Cost-effectiveness, label clarity, and brand reputation also drive purchase decisions, especially for homeowners, agricultural operators and municipal vector-control programs.

Quick Menu

1. Best Professional-Grade IGR

2. Best Consumer BTI Larvicide

3. Best Concentrated IGR

4. Best Long-Release Point Source IGR

5. Best Granular BTI Bits

1
BEST PROFESSIONAL-GRADE IGR

Altosid Pro-G Mosquito Larvicide

Altosid Pro-G Mosquito Larvicide

Altosid Pro-G is an extended-release granular insect growth regulator formulated to prevent mosquito larvae from emerging as adults, providing weeks to months of residual control that makes it especially cost-effective for large or recurring breeding sites. Compared with quick-acting biological larvicides like BTI dunks and bits, Altosid trades faster knockdown for longer persistence and reduced reapplication frequency, making it a strong technical and financial choice for municipal and commercial programs focused on suppression over time.

4.5
★★★★☆
  • Long-lasting granules

  • Catch-basin champ

  • Long-lasting granules

  • Catch-basin champ

Review Summary

90%

"Users report Altosid Pro-G provides reliable, long-lasting control by preventing mosquito emergence and is favored for larger standing-water sites; some note it doesn’t kill larvae immediately and can be pricier than granular options. Overall it’s praised for duration and ease of use in routine mosquito programs."

  • Slow-release ninja

  • Methoprene-based granular larvicide providing long-lasting control of mosquito larvae

  • Slow-release ninja

  • Methoprene-based granular larvicide providing long-lasting control of mosquito larvae

Increased Safety & Security

Time-Saving Convenience

Recreational Enjoyment

Altosid Pro-G is an extended-release granular insect growth regulator formulated to prevent mosquito larvae from emerging as adults, providing weeks to months of residual control that makes it especially cost-effective for large or recurring breeding sites. Compared with quick-acting biological larvicides like BTI dunks and bits, Altosid trades faster knockdown for longer persistence and reduced reapplication frequency, making it a strong technical and financial choice for municipal and commercial programs focused on suppression over time.

  • Long-lasting granules

  • Catch-basin champ

  • Slow-release ninja

  • Methoprene-based granular larvicide providing long-lasting control of mosquito larvae

  • Formulated for professional use to treat large standing-water sources like catch basins and ponds

  • Long-lasting granules

  • Catch-basin champ

  • Slow-release ninja

  • Methoprene-based granular larvicide providing long-lasting control of mosquito larvae

  • Formulated for professional use to treat large standing-water sources like catch basins and ponds

Order Now

$90-200 CAD

2
BEST CONSUMER BTI LARVICIDE

BTI Mosquito Dunks

BTI Mosquito Dunks

Mosquito Dunks deliver Bacillus thuringiensis israelensis (Bti) in a slow-release tablet that rapidly kills mosquito larvae in standing water while remaining safe for people, pets, and most wildlife. They are inexpensive and extremely user-friendly for spot and irregular water sources, producing faster larval mortality than IGR-only products but typically offering shorter residual protection than extended-release IGRs like Altosid Pro-G.

4.7
★★★★☆
  • Biological larvicide

  • Pet-and-fish-safe

  • Biological larvicide

  • Pet-and-fish-safe

Review Summary

95%

"BTI Mosquito Dunks are widely loved for being safe, easy to use, and highly effective at killing mosquito larvae in small containers and ponds; reviewers only caution that heavily organic or flowing water can reduce effectiveness and repeat applications may be needed. Many users rely on them for backyard and community mosquito control."

  • Pond-friendly wink

  • Contains Bacillus thuringiensis israelensis (BTI) for targeted mosquito larval mortality

  • Pond-friendly wink

  • Contains Bacillus thuringiensis israelensis (BTI) for targeted mosquito larval mortality

Increased Safety & Security

Recreational Enjoyment

Mosquito Dunks deliver Bacillus thuringiensis israelensis (Bti) in a slow-release tablet that rapidly kills mosquito larvae in standing water while remaining safe for people, pets, and most wildlife. They are inexpensive and extremely user-friendly for spot and irregular water sources, producing faster larval mortality than IGR-only products but typically offering shorter residual protection than extended-release IGRs like Altosid Pro-G.

  • Biological larvicide

  • Pet-and-fish-safe

  • Pond-friendly wink

  • Contains Bacillus thuringiensis israelensis (BTI) for targeted mosquito larval mortality

  • Safe for fish, pets, and plants when used according to label directions

  • Biological larvicide

  • Pet-and-fish-safe

  • Pond-friendly wink

  • Contains Bacillus thuringiensis israelensis (BTI) for targeted mosquito larval mortality

  • Safe for fish, pets, and plants when used according to label directions

Order Now

$12-25 CAD

3
BEST CONCENTRATED IGR

Nyguard IGR Concentrate

Nyguard IGR Concentrate

NyGuard IGR Concentrate is a professional-strength liquid insect growth regulator designed for dilution and targeted application to breeding habitats, giving applicators flexible dosing and favorable per-treatment economics at scale. Unlike biologicals that deliver immediate larval mortality, this concentrate disrupts development to reduce future adult populations and—when applied precisely or tank-mixed—can extend control longevity compared with single-mode treatments, though it requires calibrated application to maximize cost-effectiveness.

4.3
★★★★☆
  • Ultra-low dose

  • Concentrate for pros

  • Ultra-low dose

  • Concentrate for pros

Review Summary

86%

"NyGuard IGR Concentrate is viewed positively by professionals for its potency at low rates and residual prevention of adult emergence, but homeowners note it requires proper dilution/equipment and careful handling, and can be more expensive than simpler products. When applied correctly reviewers report good suppression though results depend on application quality."

  • Tiny-dose maestro

  • Pyriproxyfen concentrate that disrupts mosquito development at larval and pupal stages

  • Tiny-dose maestro

  • Pyriproxyfen concentrate that disrupts mosquito development at larval and pupal stages

Time-Saving Convenience

Skill Development & Mastery

Increased Safety & Security

NyGuard IGR Concentrate is a professional-strength liquid insect growth regulator designed for dilution and targeted application to breeding habitats, giving applicators flexible dosing and favorable per-treatment economics at scale. Unlike biologicals that deliver immediate larval mortality, this concentrate disrupts development to reduce future adult populations and—when applied precisely or tank-mixed—can extend control longevity compared with single-mode treatments, though it requires calibrated application to maximize cost-effectiveness.

  • Ultra-low dose

  • Concentrate for pros

  • Tiny-dose maestro

  • Pyriproxyfen concentrate that disrupts mosquito development at larval and pupal stages

  • Mixable formulation allows treatment of large areas and diverse breeding habitats

  • Ultra-low dose

  • Concentrate for pros

  • Tiny-dose maestro

  • Pyriproxyfen concentrate that disrupts mosquito development at larval and pupal stages

  • Mixable formulation allows treatment of large areas and diverse breeding habitats

Order Now

$45-95 CAD

4
BEST LONG-RELEASE POINT SOURCE IGR

Gentrol Point Source IGR

Gentrol Point Source IGR

Gentrol Point Source uses a controlled-release point-source format to dispense a juvenile hormone analog continuously at infestation hotspots, offering long-duration suppression with minimal worker interaction or frequent reapplications. Its technical advantage lies in sustained, localized disruption of pest development—making it especially valuable in confined or indoor sites—while higher per-unit costs are often offset by reduced labor and the ability to pair with quick-acting larvicides for integrated programs.

4.1
★★★★☆
  • Discrete point-source

  • Long-life release

  • Discrete point-source

  • Long-life release

Review Summary

82%

"Gentrol Point Source IGR is appreciated by pest pros for providing ongoing suppression of target insects (especially stored-product pests and flies) with discreet placement, though some consumers find the devices costly and location-dependent for best results. Reviews indicate solid supplemental control when used as part of an IPM program."

  • Stealth puck

  • Point-source IGR that releases active ingredient slowly to inhibit insect development over time

  • Stealth puck

  • Point-source IGR that releases active ingredient slowly to inhibit insect development over time

Time-Saving Convenience

Increased Safety & Security

Gentrol Point Source uses a controlled-release point-source format to dispense a juvenile hormone analog continuously at infestation hotspots, offering long-duration suppression with minimal worker interaction or frequent reapplications. Its technical advantage lies in sustained, localized disruption of pest development—making it especially valuable in confined or indoor sites—while higher per-unit costs are often offset by reduced labor and the ability to pair with quick-acting larvicides for integrated programs.

  • Discrete point-source

  • Long-life release

  • Stealth puck

  • Point-source IGR that releases active ingredient slowly to inhibit insect development over time

  • Designed for placement in voids and sheltered areas for continuous protection

  • Discrete point-source

  • Long-life release

  • Stealth puck

  • Point-source IGR that releases active ingredient slowly to inhibit insect development over time

  • Designed for placement in voids and sheltered areas for continuous protection

Order Now

$50-100 CAD

5
BEST GRANULAR BTI BITS

Summit Mosquito Bits

Summit

Summit Mosquito Bits are a Bti-based granular formulation designed for rapid larval control in small containers and shallow water, providing an affordable, fast-acting spot-treatment option for residential or transient breeding sites. They complement longer-lasting IGR products (such as Altosid or NyGuard) in integrated approaches by delivering immediate reductions in larval numbers while IGRs suppress subsequent generations, though their shorter persistence means more frequent re-treatment in high-pressure areas.

4.5
★★★★☆
  • Fast-dissolving bits

  • Scatter-friendly yard

  • Fast-dissolving bits

  • Scatter-friendly yard

Review Summary

89%

"Summit Mosquito Bits (Bti granules) are favored for quick, targeted treatment of small standing water and container habitats, being easy to apply and safe around people and pets; reviewers mention they may require more frequent reapplication than briquettes in certain conditions. Overall seen as an effective, user-friendly larvicide for yard use."

  • Instant puddle zap

  • Granular BTI formulation that quickly kills mosquito larvae in small water sources

  • Instant puddle zap

  • Granular BTI formulation that quickly kills mosquito larvae in small water sources

Recreational Enjoyment

Increased Safety & Security

Summit Mosquito Bits are a Bti-based granular formulation designed for rapid larval control in small containers and shallow water, providing an affordable, fast-acting spot-treatment option for residential or transient breeding sites. They complement longer-lasting IGR products (such as Altosid or NyGuard) in integrated approaches by delivering immediate reductions in larval numbers while IGRs suppress subsequent generations, though their shorter persistence means more frequent re-treatment in high-pressure areas.

  • Fast-dissolving bits

  • Scatter-friendly yard

  • Instant puddle zap

  • Granular BTI formulation that quickly kills mosquito larvae in small water sources

  • Easy to broadcast into gutters, birdbaths, pots, and other container habitats

  • Fast-dissolving bits

  • Scatter-friendly yard

  • Instant puddle zap

  • Granular BTI formulation that quickly kills mosquito larvae in small water sources

  • Easy to broadcast into gutters, birdbaths, pots, and other container habitats

Order Now
-18%18.13$
Suggested Price: 21.99$

What the Research Says: Beginner-Friendly Evidence on IGRs and Larvicides

Scientific research and regulatory reviews consistently show that IGRs and biological larvicides can reduce pest populations by disrupting development stages rather than relying solely on adult-targeted insecticides. These approaches lower overall chemical load, target specific life stages, and can be integrated into IPM plans to delay resistance. Health Canada’s Pest Management Regulatory Agency (PMRA) evaluates active ingredients for efficacy and safety before registration, and peer-reviewed studies support the use of BTI (Bacillus thuringiensis israelensis) products for mosquito control and juvenile-hormone analogs or chitin-synthesis inhibitors for broad-spectrum growth regulation.

BTI-based larvicides (e.g., dunks, bits) deliver bacterial toxins that selectively kill mosquito larvae with minimal impacts on most non-target organisms; field and laboratory studies show reliable larval mortality in treated habitats.

IGRs such as juvenile hormone analogs and chitin synthesis inhibitors prevent normal development or adult emergence, reducing reproduction and long-term population growth in stored-product pests and flies.

Point-source and controlled-release formulations extend effective treatment windows and reduce application frequency, which supports long-term control with fewer interventions.

Resistance management is supported by rotating modes of action and combining biological larvicides with IGRs in IPM strategies; multiple studies and guidelines recommend integrated approaches over repeated single-mode treatments.

Regulatory assessments (PMRA in Canada and comparable international reviews) include environmental fate and non-target risk evaluations, offering an added layer of consumer confidence when purchasing registered products.

In Canada, choosing the right IGR or larvicide depends on the site, target species and your tolerance for application frequency or exposure. The five top options covered here — Altosid Pro-G Mosquito Larvicide, BTI Mosquito Dunks, Nyguard IGR Concentrate, Gentrol Point Source IGR, and Summit Mosquito Bits — represent the main formulation styles (long‑lasting pellets, biological dunks, liquid concentrates, controlled point sources and granular bits) used across residential, agricultural and municipal settings. For most homeowners seeking a balance of safety, ease and proven performance, BTI Mosquito Dunks are often the best first choice; Altosid Pro-G and Gentrol Point Source suit larger or longer-term control needs, while Nyguard and Summit offer flexible concentrate and granular options for specific pests and sites. I hope you found what you were looking for — refine or expand your search using the site search to compare formulations, label instructions and PMRA registration details for Canadian use.

Discover More
  • Rodent Traps, Bait Stations and Baiting Systems
  • Fly Control Systems, Baits and Sticky Traps
  • Screening, Exclusion Mesh and Door Seals
  • Feed Protection Containers and Sealable Storage
  • Bird Deterrents, Netting, Spikes and Repellents
  • Pest Monitoring, Inspection and Detection Tools

Copyright © 2025 InceptionAi Inc.

Trademark Policy

Articles

About Us

Contact Us

Careers

Sitemap