Lawn Diseases
Lawn Grubs: How and When to Kill Them
Ohio State treats above 10 grubs per square foot, Illinois at about 12. Below that, count and do nothing — curative products only work August to October.
Professional Surface Insecticide (microencapsulated)
Syngenta Demand CS Insecticide Concentrate Review
★★★★☆ 4.1/5
our editor rating how we score4.6/5 from 5,789 shoppers at Amazon — their number, not ours.
$36–$44 (8 oz)
Typical price · 8 oz makes a large volume of finished spray; a bottle lasts most homeowners several seasons
Affiliate links — see our disclosure. Commissions never influence verdicts.
A professional microencapsulated pyrethroid — excellent at what pest-control operators buy it for, which is structures and perimeters rather than lawns.
Our Verdict
Demand CS is what the trade uses for perimeter and structural work, and the CS in the name is the reason: microencapsulation wraps the lambda-cyhalothrin in polymer capsules that release slowly, giving longer residual on hard surfaces than a straight emulsifiable concentrate. If your problem is ants trailing into the house, spiders in the eaves, or a perimeter band you want to hold for weeks, this is a genuinely better tool than anything on a garden-centre shelf, and 8 oz makes enough finished spray to last years. Be clear about what it is not, though. The listing does not claim white grubs and we would not stretch it to them — it is a pyrethroid, and pyrethroids bind to thatch and organic matter rather than moving down to the root zone. It is also non-selective and highly toxic to bees and aquatic life, which is an argument for the targeted band it is designed for and against broadcasting it over turf.
✅ Pros
- Microencapsulated formulation gives noticeably longer residual on hard surfaces than standard concentrates
- Professional concentration — one small bottle makes a great deal of finished spray
- Low odour and non-staining, which matters for the perimeter work it is built for
- Broad label covering the ants, spiders and occasional invaders most households actually fight
⚠️ Cons
- Not a grub product — the listing makes no such claim, and pyrethroids do not reach larvae in the root zone
- Not really a turf product at all; its strength is perimeter and structural use
- Non-selective and highly toxic to bees and aquatic life; wrong choice for broadcast lawn use
- Needs a sprayer, accurate measuring and care — professional strength cuts both ways
Product type
Professional Surface Insecticide (microencapsulated)
Active ingredient
Lambda-cyhalothrin 9.7% (microencapsulated capsule suspension)
Price range
$36–$44 (8 oz)
Coverage
8 oz makes a large volume of finished spray; a bottle lasts most homeowners several seasons
Best for
Perimeter and structural pest work around the house, not whole-lawn or grub treatment
our editor rating
4.1 out of 5
Where our facts come from
Label read on EPA's label database
EPA Reg. No. 100-1066
We opened this product's accepted label on EPA's own Pesticide Product Label System — the strongest source available for what a product is registered to do.
What we found when we read it
Label read 2026-08-02 on EPA PPLS (accepted 2024-01-23). 'Demand CS Insecticide', EPA Reg. 100-1066, lambda-cyhalothrin 9.7%, CAS 91465-08-6, formulated as a capsule suspension. This is a professional product — check the label's applicator and site statements against your situation before buying, because the strength is roughly 100 times the consumer granular bifenthrin products on this shelf.
Where this page and the container disagree, the container wins — the label is the legal authority on rates and restrictions. How to read one yourself.
Where This Product Matters
Matched against each state's actual disease, weed and pest pressure.
Alabama
Alabama hub →Fire ants (they entered the country at Mobile, and Alabama has lived with them longest)Chinch bugs (St. Augustine)
Arkansas
Arkansas hub →Fire antsChinch bugs
California
California hub →Red imported fire ants, a quarantined pest since arriving in 1998 — infesting Orange, Los Angeles, Riverside, San Bernardino and to a lesser extent San Diego counties, with the regulated area covering Orange County and portions of Los Angeles and Riverside rather than the state; CDFA runs a reporting hotline for finds outside it
Connecticut
Connecticut hub →Chinch bugs (sunny, dry, sandy strips — the shoreline and the road edge)
Delaware
Delaware hub →Chinch bugs (hot dry sand along drives, walks and the beach-town lots)
Florida
Florida hub →Southern chinch bugsRed imported fire ants, plus the less common native tropical fire ant — UF/IFAS records mounds in open sunny lawns and nesting under patio slabs, sidewalk edges and electrical boxes
Georgia
Georgia hub →Fire ants (statewide, mounds year-round)Chinch bugs (coastal St. Augustine)
Hawaii
Hawaii hub →Chinch bugs on St. Augustine
Illinois
Illinois hub →Chinch bugs (sunny south-facing slopes)
Indiana
Indiana hub →Chinch bugs
Kansas
Kansas hub →Chinch bugs, a perennial Kansas pest across essentially every turf type rather than a coastal or sandy-soil specialist
Kentucky
Kentucky hub →Chinch bugs (dry sunny banks)
Louisiana
Louisiana hub →Southern chinch bugs (primarily a St. Augustine problem)Fire ants
Maine
Maine hub →Chinch bugs (dry sandy strips along the coast and the river valleys)
Maryland
Maryland hub →Hairy chinch bugs
Massachusetts
Massachusetts hub →Hairy chinch bugs
Mississippi
Mississippi hub →Fire antsChinch bugs (St. Augustine)
Missouri
Missouri hub →Chinch bugs (sunny southern slopes)
Nebraska
Nebraska hub →Chinch bugs
Nevada
Nevada hub →Ants
New Hampshire
New Hampshire hub →Chinch bugs (dry sunny sand along the river valleys)
New Jersey
New Jersey hub →Chinch bugs
New Mexico
New Mexico hub →Chinch bugs in hot dry sandy strips, which describes most of the stateRed imported fire ants in isolated instances only, with Dona Ana County under quarantine: nursery stock, sod, soil, baled hay and straw, and soil-moving equipment leaving the county must be certified free of the pest
New York
New York hub →Chinch bugs
North Carolina
North Carolina hub →Red imported fire ants, with NCDA&CS running its own quarantine that restricts moving plant products from infested areas into non-infested ones; NC State records only Solenopsis invicta here, with no hybrid
Ohio
Ohio hub →Hairy chinch bugs
Oklahoma
Oklahoma hub →Chinch bugsFire ants (southeastern counties)
Pennsylvania
Pennsylvania hub →Hairy chinch bugs
Rhode Island
Rhode Island hub →Chinch bugs (South County sand and sunny road edges)
South Carolina
South Carolina hub →Imported fire ants, which Clemson treats on a two-bait-per-year calendar rather than on demand
Tennessee
Tennessee hub →Imported fire ants, first confirmed as an isolated Shelby County infestation in 1948 and now covered by a Tennessee Department of Agriculture quarantine whose county list is reissued as the range moves; UT Extension publishes the two-step bait method as SP419
Texas
Texas hub →Chinch bugsFire ants
Vermont
Vermont hub →Chinch bugs (dry sandy strips in the valleys)
Virginia
Virginia hub →Chinch bugsImported fire ants, including the hybrid Virginia Tech publishes on separately, under a VDACS quarantine that has expanded in 2019, 2022 and again on 27 May 2025 and now covers 18 counties and 15 independent cities rather than the whole state
Common questions
Common Questions
How much does Syngenta Demand CS Insecticide Concentrate cost?
Syngenta Demand CS Insecticide Concentrate typically runs $36–$44 (8 oz), covering 8 oz makes a large volume of finished spray; a bottle lasts most homeowners several seasons.
What does Syngenta Demand CS Insecticide Concentrate treat?
Syngenta Demand CS Insecticide Concentrate targets Fire ants, Chinch bugs.
What is the active ingredient in Syngenta Demand CS Insecticide Concentrate?
Lambda-cyhalothrin 9.7% (microencapsulated capsule suspension), registered under EPA Reg. No. 100-1066.
What is the biggest downside of Syngenta Demand CS Insecticide Concentrate?
Not a grub product — the listing makes no such claim, and pyrethroids do not reach larvae in the root zone
Does Syngenta Demand CS kill Fire ants?
Yes — the label for Syngenta Demand CS lists Fire ants, and we rate it 4.1/5 for that job. Our verdict above says what earned the rating and where the limits are.
Does Syngenta Demand CS kill Chinch bugs?
Yes — the label for Syngenta Demand CS lists Chinch bugs, and we rate it 4.1/5 for that job. Our verdict above says what earned the rating and where the limits are.
Where can I read the label for Syngenta Demand CS?
The accepted label is linked from this page, and the product is EPA Reg. No. 100-1066 — the number to search if the link ever moves. The label is the legal document; anything on this page that disagrees with it is wrong.
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