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
- Tolfenpyrad
- Chemical class
- Pyrazole-5-carboxamide; IRAC Group 21A METI insecticides and acaricides.[2]
- Mode of action
- IRAC Group 21A: Mitochondrial complex I electron transport inhibitors: METI acaricides and insecticides[2]
- Signal word
- Tolfenpyrad 15SC Insecticide (sold as Bexar, Hachi-Hachi SC, Apta and Torac SC): Warning[1]
An insecticide that also suppresses mildew
Besides IRAC Group 21A, the label carries a FRAC Group 39 fungicide code. FRAC places tolfenpyrad among complex I NADH oxido-reductase inhibitors, the pyrazole-MET1 class.[1][3]
On ornamentals, mildew and whitefly activity is listed as suppression only. The label says a product used for suppression should not be substituted for labeled fungicides.[1]
Rotation
Rotate tolfenpyrad with insecticides from other groups that control the same pests. The label warns that repeated use of Group 21A products can let naturally resistant individuals take over.[1]
Where it is used
It works mainly by contact, so thorough coverage matters. Treat when pests are young and populations are building, before damage shows, and spray right after mixing.[1]
Don't apply it to salvia, impatiens, New Guinea impatiens, gypsophila or redbud (Cercis), or to poinsettias with colored bracts, because of possible plant injury.[1]
Ageratum, begonia, geranium, lobelia, marigold, pansy flowers, verbena, vinca and a few others may show temporary injury. Test on a small sample of each plant before commercial spraying.[1]
Don't spray to the point of runoff or put it through any irrigation system, and keep it out of sewers and drains.[1]
Products and registrations
| Product | Registrant | EPA Reg. No. | Active % | Formulation | Signal word |
|---|---|---|---|---|---|
| Tolfenpyrad 15SC Insecticide (sold as Bexar, Hachi-Hachi SC, Apta and Torac SC)[1] | Nichino America, Inc. | 71711-36 | 15.0% | suspension concentrate | Warning |
Label rates
| Product | Use | Pests | Rate |
|---|---|---|---|
| Tolfenpyrad 15SC Insecticide (sold as Bexar, Hachi-Hachi SC, Apta and Torac SC) | Greenhouse ornamental plants (not grown for cut flowers) | Aphids, leafhoppers, young caterpillars, mealybugs, soft scales, thrips; suppression of whiteflies and downy and powdery mildew | 21–32 fl oz product per 100 gallons of water[1] 100 gallons of finished spray typically covers 20,000 sq ft of greenhouse. No more than 2 applications per plant cycle, at least 10 days apart. |
| Tolfenpyrad 15SC Insecticide (sold as Bexar, Hachi-Hachi SC, Apta and Torac SC) | Greenhouse ornamentals grown for cuttings and cut flowers | Aphids, leafhoppers, young caterpillars, mealybugs, soft scales, thrips; suppression of whiteflies and mildews | 14–32 fl oz product per 100 gallons of water[1] No more than 4 applications a year and 2 per plant cycle; 0-day preharvest interval. |
| Tolfenpyrad 15SC Insecticide (sold as Bexar, Hachi-Hachi SC, Apta and Torac SC) | Outdoor nursery, landscape and container ornamentals, ground covers and Christmas trees (not registered in California) | Aphids, beetles including Japanese and red-headed flea beetles, young caterpillars, leafhoppers, mealybugs, soft scales, thrips | 14–27 fl oz product per 100 gallons of water[1] Use at least 100 gallons of spray per acre. Ground application only, 2 applications per season at most, and never in residential areas. |
Safety and environmental hazards
People
Signal word WARNING: may be fatal if inhaled, and harmful if swallowed or absorbed through skin. Handlers wear goggles or safety glasses, waterproof gloves and an organic-vapor respirator; workers stay out for 12 hours after treatment.[1]
Pets
This is not a home-use product: the ornamental label prohibits application in residential areas and as a smoke or aerosol.[1]
Bees and pollinators
Highly toxic to bees and other pollinators. Spray at least 8 hours before bees forage, and don't spray blooming plants while bees are visiting unless one of the label's exceptions, such as after sunset, applies.[1]
Fish and water
Very highly toxic to fish and aquatic invertebrates, with medium to high potential to reach surface water through runoff for several weeks. Avoid spraying when rain is forecast within 48 hours.[1]
Common questions
- Can homeowners use Bexar or Hachi-Hachi?
- No. The ornamental label says use in residential areas is prohibited. It is a commercial product for greenhouses, nurseries and crop fields.[1]
- How much tolfenpyrad per 100 gallons?
- 21 to 32 fl oz for greenhouse ornamentals, 14 to 32 fl oz for cut-flower crops, and 14 to 27 fl oz for outdoor ornamentals. Never more than 32 fl oz per 100 gallons per application.[1]
- Is tolfenpyrad systemic?
- The label describes it as working primarily through contact action, which is why it stresses complete spray coverage of all plant parts.[1]
Sources
- U.S. EPA Pesticide Product Label System, “Tolfenpyrad 15SC Insecticide master label label, EPA Reg. No. 71711-36 (EPA-stamped, July 28, 2026).” www3.epa.gov/pesticides/chem_search/ppls/071711-00036-20260728.pdf (accessed 2026-10-06)
- 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)
- Fungicide Resistance Action Committee, “FRAC Code List 2025.” www.frac.info/media/ljsi3qrv/frac-code-list-2025.pdf (accessed 2026-10-06)