Precor IGR Concentrate
Precor IGR Concentrate is respected for consistent field performance and strong compatibility with a range of adulticide tank mixes, making it a favorite for integrated flea programs in dog homes where blended treatments are used. Financially, Precor sits between the high-end and budget options: it carries a slightly higher price than basic concentrates but can reduce total program costs by improving overall efficacy when used alongside adulticides, compared with stand-alone lower-cost IGRs.
Proven pedigree
Low-odor treatment
Proven pedigree
Low-odor treatment
Review Summary
"Precor IGR Concentrate is consistently rated highly by homeowners and pros for dependable long‑term flea control and professional‑grade performance; many reviewers note faster and more noticeable reductions when used with an adulticide. Users praise its potency and ease of use after dilution, making it the most recommended among choices."
Flea lifecycle freeze
Widely used S‑methoprene concentrate trusted by pest-control professionals for home flea programs.
Flea lifecycle freeze
Widely used S‑methoprene concentrate trusted by pest-control professionals for home flea programs.
Increased Safety & Security
Time-Saving Convenience
Precor IGR Concentrate is respected for consistent field performance and strong compatibility with a range of adulticide tank mixes, making it a favorite for integrated flea programs in dog homes where blended treatments are used. Financially, Precor sits between the high-end and budget options: it carries a slightly higher price than basic concentrates but can reduce total program costs by improving overall efficacy when used alongside adulticides, compared with stand-alone lower-cost IGRs.
Proven pedigree
Low-odor treatment
Flea lifecycle freeze
Widely used S‑methoprene concentrate trusted by pest-control professionals for home flea programs.
Offers reliable residual activity on carpets, cracks and crevices where flea immatures develop.
Proven pedigree
Low-odor treatment
Flea lifecycle freeze
Widely used S‑methoprene concentrate trusted by pest-control professionals for home flea programs.
Offers reliable residual activity on carpets, cracks and crevices where flea immatures develop.
$90-160 CAD
Precor 2625 Premise Spray IGR
Precor 2625 is the professional-grade market leader for whole-home environmental flea control because its proven IGR formulation delivers long residual activity and lifecycle disruption across carpets, baseboards, and crevices. Although this product is a spray rather than a powder, it is frequently included in integrated flea programs for dog homes due to its technical superiority for heavy infestations and cost-effectiveness at scale compared with repeated spot powdering.
IGR long-action
Crevice reach
IGR long-action
Crevice reach
Review Summary
"A professional-grade IGR concentrate praised for long-lasting control of flea life stages and strong residual effects when applied correctly; reviewers note it requires proper dilution and sometimes professional application for best results."
Lab-strength punch
Concentrated premise spray containing a registered IGR (pyriproxyfen) to interrupt the flea life cycle.
Lab-strength punch
Concentrated premise spray containing a registered IGR (pyriproxyfen) to interrupt the flea life cycle.
Increased Safety & Security
Time-Saving Convenience
Precor 2625 is the professional-grade market leader for whole-home environmental flea control because its proven IGR formulation delivers long residual activity and lifecycle disruption across carpets, baseboards, and crevices. Although this product is a spray rather than a powder, it is frequently included in integrated flea programs for dog homes due to its technical superiority for heavy infestations and cost-effectiveness at scale compared with repeated spot powdering.
IGR long-action
Crevice reach
Lab-strength punch
Concentrated premise spray containing a registered IGR (pyriproxyfen) to interrupt the flea life cycle.
Designed for dilution for large indoor/outdoor treatments and professional‑style applications.
IGR long-action
Crevice reach
Lab-strength punch
Concentrated premise spray containing a registered IGR (pyriproxyfen) to interrupt the flea life cycle.
Designed for dilution for large indoor/outdoor treatments and professional‑style applications.
$80-160 CAD
Siphotrol Plus II Premise Spray
Siphotrol Plus II Premise Spray is noted for being a versatile professional concentrate that allows technicians to target harborage areas precisely and to tailor residual dosing for compatibility with slow‑release dispensers in dog homes. Financially it's attractive for pest control services because the concentrate format reduces per-treatment cost compared with ready-to-use foggers, while technically it offers more controlled placement than whole‑house fogging solutions on this list.
Residual protection
Indoor/outdoor use
Residual protection
Indoor/outdoor use
Review Summary
"Widely favored by pest professionals and homeowners for effective, long-lasting control and straightforward mixing; users emphasize the need for thorough application to reach harborage areas for best results."
Low-odor comfort
Premise spray designed for large indoor areas with both quick knockdown and residual control.
Low-odor comfort
Premise spray designed for large indoor areas with both quick knockdown and residual control.
Increased Safety & Security
Time-Saving Convenience
Siphotrol Plus II Premise Spray is noted for being a versatile professional concentrate that allows technicians to target harborage areas precisely and to tailor residual dosing for compatibility with slow‑release dispensers in dog homes. Financially it's attractive for pest control services because the concentrate format reduces per-treatment cost compared with ready-to-use foggers, while technically it offers more controlled placement than whole‑house fogging solutions on this list.
Residual protection
Indoor/outdoor use
Low-odor comfort
Premise spray designed for large indoor areas with both quick knockdown and residual control.
Formulated to penetrate carpets, upholstery and common harborages where fleas develop.
Residual protection
Indoor/outdoor use
Low-odor comfort
Premise spray designed for large indoor areas with both quick knockdown and residual control.
Formulated to penetrate carpets, upholstery and common harborages where fleas develop.
$120-250 CAD
Virbac Knockout E.S. Area Treatment
Virbac Knockout E.S. Area Treatment leverages the veterinary company's reputation to offer a lab-backed IGR/adulticide-compatible concentrate intended for targeted indoor area treatments in dog environments; its emulsifiable formulation allows flexible dilution rates for larger or recurrent infestations. Compared with retail aerosols, Knockout E.S. expects a premium price but offers technical advantages for integration into a veterinarian-led treatment plan and for use where compatibility with prescription topical adulticides is a priority.
Fast knockdown
Residual protection
Fast knockdown
Residual protection
Review Summary
"Most reviewers praise rapid knockdown of fleas in treated areas and compatibility with other adulticides, with occasional notes about smell and the need for careful dilution or professional-strength handling."
Citrus pep finish
Concentrated area treatment that pairs an IGR with fast-acting insecticidal actives for quick knockdown of fleas.
Citrus pep finish
Concentrated area treatment that pairs an IGR with fast-acting insecticidal actives for quick knockdown of fleas.
Increased Safety & Security
Time-Saving Convenience
Virbac Knockout E.S. Area Treatment leverages the veterinary company's reputation to offer a lab-backed IGR/adulticide-compatible concentrate intended for targeted indoor area treatments in dog environments; its emulsifiable formulation allows flexible dilution rates for larger or recurrent infestations. Compared with retail aerosols, Knockout E.S. expects a premium price but offers technical advantages for integration into a veterinarian-led treatment plan and for use where compatibility with prescription topical adulticides is a priority.
Fast knockdown
Residual protection
Citrus pep finish
Concentrated area treatment that pairs an IGR with fast-acting insecticidal actives for quick knockdown of fleas.
Suitable for indoor and perimeter applications in dog homes, with instructions for safe use around treated animals.
Fast knockdown
Residual protection
Citrus pep finish
Concentrated area treatment that pairs an IGR with fast-acting insecticidal actives for quick knockdown of fleas.
Suitable for indoor and perimeter applications in dog homes, with instructions for safe use around treated animals.
$80-140 CAD
Nylar IGR Concentrate Solution
Nylar IGR Concentrate Solution (pyriproxyfen-based) is designed for highly targeted disruption of flea egg and larval development at very low application rates, making it ideal in dog homes where minimizing chemical load is important. Its potency means smaller volumes are required, which can translate to superior cost-effectiveness per treated square foot despite a sometimes higher shelf price, and it complements broader-spectrum products when used in mixes or rotation. Compared to Precor and Martin's, Nylar offers faster developmental inhibition and a lower recommended use rate, though its narrower target profile may necessitate pairing with an adulticide for immediate knockdown.
Pupal control — stealthy blocker
Low dose needed — tiny sip
Pupal control — stealthy blocker
Low dose needed — tiny sip
Review Summary
"Widely trusted IGR with strong long-term control and high residual activity against flea larvae and eggs; many users report clear population declines within weeks, though it must be used alongside adulticides for immediate knockdown."
Proven field-use — vet-trusted
Widely used IGR concentrate known for strong residual activity against eggs and larvae.
Proven field-use — vet-trusted
Widely used IGR concentrate known for strong residual activity against eggs and larvae.
Increased Safety & Security
Time-Saving Convenience
Nylar IGR Concentrate Solution (pyriproxyfen-based) is designed for highly targeted disruption of flea egg and larval development at very low application rates, making it ideal in dog homes where minimizing chemical load is important. Its potency means smaller volumes are required, which can translate to superior cost-effectiveness per treated square foot despite a sometimes higher shelf price, and it complements broader-spectrum products when used in mixes or rotation. Compared to Precor and Martin's, Nylar offers faster developmental inhibition and a lower recommended use rate, though its narrower target profile may necessitate pairing with an adulticide for immediate knockdown.
Pupal control — stealthy blocker
Low dose needed — tiny sip
Proven field-use — vet-trusted
Widely used IGR concentrate known for strong residual activity against eggs and larvae.
Suitable for targeted spot applications around dog sleeping areas and baseboards.
Pupal control — stealthy blocker
Low dose needed — tiny sip
Proven field-use — vet-trusted
Widely used IGR concentrate known for strong residual activity against eggs and larvae.
Suitable for targeted spot applications around dog sleeping areas and baseboards.
$90-200 CAD