The label is the law. Rates and restrictions below are taken from the product labels listed under Sources. Your product's own label governs; read it before you mix or apply. Mixing calculator · Disclaimer
- Active ingredient
- Gamma-cyhalothrin
- Chemical class
- Pyrethroid; IRAC Group 3A sodium channel modulators.[2]
- Mode of action
- IRAC Group 3A: Sodium channel modulators: pyrethroids and pyrethrins[2]
- Signal word
- Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate): Caution[1]
Days to wait before you pick
Leafy crops such as lettuce, cabbage and broccoli need 1 day between the last spray and harvest. Tomatoes, peppers and eggplant need 5 days, beans and peas 7, onions and garlic 14, and sweet corn 21.[1]
Apples and pears need 21 days, while peaches, cherries, plums and nut trees need 14. Fruit trees are limited to 9 sprays a year, with no more than 5 after bloom.[1]
Where gamma-cyhalothrin fits
It is a Group 3A pyrethroid, the same IRAC group as lambda-cyhalothrin, bifenthrin and permethrin. Switching among these doesn't change the mode of action, so rotate to a different group if a pest stops responding.[2]
Where it is used
For lawn surface insects, wet the grass a few hours ahead, then hold off watering or mowing for 24 hours. For grubs and mole crickets, water in with an extra quarter to half inch afterward.[1]
Before a perimeter treatment, clear leaf litter, cut back plants touching the foundation, and rake back deep mulch so the spray reaches the soil where pests travel.[1]
On fire ant mounds, don't disturb the mound first. Treat in cool weather, 65 to 80 degrees, or early morning or late evening.[1]
Hard surfaces such as sidewalks, driveways and patios get spot or crack-and-crevice treatment only. Don't spray during rain or water to the point of runoff, and test a hidden spot on vinyl siding first.[1]
Products and registrations
| Product | Registrant | EPA Reg. No. | Active % | Formulation | Signal word |
|---|---|---|---|---|---|
| Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate)[1] | Chemsico, Division of United Industries Corp. | 9688-277 | 0.08% | liquid concentrate for tank or hose-end sprayer | Caution |
Label rates
| Product | Use | Pests | Rate |
|---|---|---|---|
| Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate) | Lawns | Grubs, chinch bugs, billbugs, mole crickets, European crane flies, ants, fleas, ticks, sod webworms, armyworms and other listed lawn insects | 1.5 fl oz product per gallon of water[1] That's 3 tablespoons per gallon. One gallon covers 120 sq ft for underground insects such as grubs, or 240 sq ft for surface insects. Underground treatments are capped at 7 a year, surface treatments at 14. |
| Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate) | Home foundation band and outdoor building surfaces | Ants, centipedes, cockroaches, crickets, fleas, millipedes, mosquitoes, scorpions, sowbugs, pillbugs, spiders and deer ticks | 1.5 fl oz product per gallon of water[1] Spray a 3 ft band around the house and up the foundation to 3 ft. One gallon treats 240 sq ft; repeat every 8 to 12 weeks. |
| Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate) | Fire ant mounds | Fire ants | 3.0 fl oz product per gallon of water[1] 6 tablespoons in a gallon per mound, wetting the mound and a 4 ft circle around it. |
| Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate) | Ornamental trees, shrubs and flowers | Aphids, bagworms, Japanese beetles, lace bugs, leafhoppers, tent caterpillars, thrips, scale crawlers and many others; mites, mealybugs and whiteflies at the higher rate | 0.75–1.5 fl oz product per gallon of water[1] 1.5 tablespoons per gallon for most listed insects; 3 tablespoons per gallon for spider mites, clover mites, mealybugs, soft scale and whiteflies. |
| Chemsico Insecticide Concentrate 8G (sold as Spectracide Triazicide Insect Killer for Lawns & Landscapes Concentrate) | Vegetables and home fruit and nut trees | Caterpillars, beetles, stink bugs, aphids, leafhoppers, codling moth, plum curculio and other listed pests | 1.5 fl oz product per gallon of water[1] One gallon covers 300 sq ft. Wait 1 to 21 days before harvest depending on the crop. |
Safety and environmental hazards
People
Signal word CAUTION: harmful if swallowed. Wash your hands with soap and water after handling it, and the label suggests wearing gloves while you mix.[1]
Pets
Keep children and pets out of the treated area until the spray has dried.[1]
Bees and pollinators
Highly toxic to bees exposed to direct spray or residues on blooming plants or weeds. Don't spray or let it drift onto anything in bloom while bees are visiting.[1]
Fish and water
Extremely toxic to fish. Keep it out of storm drains, gutters and ditches, and spray in calm weather when no rain is expected for 24 hours.[1]
Common questions
- How much Triazicide concentrate per gallon?
- 3 tablespoons (1.5 fl oz) per gallon for lawns, the home perimeter, vegetables and fruit trees. Use 1.5 tablespoons for most flower and shrub insects, and 6 tablespoons per gallon for each fire ant mound.[1]
- Can I spray gamma-cyhalothrin inside my house?
- No. This label says it is for outdoor use around the home only; the pests-outside-the-home directions cover foundations, entry points and outdoor surfaces.[1]
- Is it safe for my dog after spraying the lawn?
- The label says to keep children and pets off the treated area until it has dried.[1]
Sources
- U.S. EPA Pesticide Product Label System, “Chemsico Insecticide Concentrate 8G label, EPA Reg. No. 9688-277 (EPA-stamped, June 29, 2016).” www3.epa.gov/pesticides/chem_search/ppls/009688-00277-20160629.pdf (accessed 2026-10-06). EPA's product registry lists Spectracide Triazicide brand names for this product under supplemental distributor registration 9688-277-8845.
- Insecticide Resistance Action Committee, “IRAC Mode of Action Classification Scheme, Version 11.5 (Feb. 2026).” irac-online.org/documents/moa-classification/ (accessed 2026-10-06)