The label is the law. Read your product's label before you mix or apply; the rates here come from the labels listed under Sources.
- Active ingredient
- Indoxacarb (CAS 173584-44-6)
- Chemical class
- Oxadiazine insecticide; broad-spectrum.[1][3]
- Mode of action
- IRAC Group 22A: Voltage-dependent sodium channel blockers: oxadiazines[3]
- Signal word
- Indoxacarb Cockroach Gel (Syngenta consumer gel bait): Caution[2]
How it works
Indoxacarb blocks the sodium ion channels in insect nerves, which leads to paralysis and death.[1]
It is IRAC Group 22A; pyrethroids act on sodium channels too but are classed separately as Group 3A, and fipronil (2B) and hydramethylnon (20A) are other bait actives to rotate with.[3]
Why many small spots beat a few big ones
The label says more placements let more cockroaches feed at the same time when populations are high.[2]
Where it is used
Indoors, place gel in kitchens, bathrooms, laundry rooms, basements and garages: under sinks and around pipes, in cabinet and drawer corners, behind and under appliances, behind toilets, at trash cans and at openings into wall and floor voids.[2]
Do not put gel on surfaces recently treated with a residual insecticide, on food-contact surfaces, in electrical equipment, or in hot spots or direct sunlight.[2]
Inspect the placements periodically and add fresh bait as it is eaten.[2]
Products and registrations
| Product | Registrant | EPA Reg. No. | Active % | Formulation | Signal word |
|---|---|---|---|---|---|
| Indoxacarb Cockroach Gel (Syngenta consumer gel bait)[2] | Syngenta Crop Protection, LLC | 100-1504 | 0.3% | ready-to-use gel bait | Caution |
Label rates
| Product | Use | Pests | Rate |
|---|---|---|---|
| Indoxacarb Cockroach Gel (Syngenta consumer gel bait) | Cracks, crevices and corners indoors, and pest entry points outdoors | Cockroaches, including German cockroaches | 1–5 spots per sq yd or 10 linear ft[2] 1 to 3 spots for light to moderate infestations, 3 to 5 for heavy ones. Each spot is about a quarter inch across. A bead instead: less than 1/8 inch wide and about 2 inches long. |
How to apply it, step by step
1. Protective gear
- No protective gear is listed; avoid getting the gel on your skin, in your eyes or on your clothing, and wash with soap and water after handling.[2]
2. Before you spray
- Choose spots children and pets can't easily reach, and keep the gel off surfaces that touch food and away from open food.[2]
- Don't bait surfaces recently treated with a residual spray, and don't spray over bait placements later; a spray makes the bait ineffective.[2]
- Avoid hot spots, direct sunlight and electrical equipment.[2]
3. Mixing
- It comes ready to use in its applicator; there's nothing to mix.[2]
4. Applying
- Put small dots, about ¼ inch across or the size of a pea, into cracks, crevices and corners where roaches hide: under sinks and around pipes, in cabinet and drawer corners, behind and under appliances, behind toilets, along baseboards and around doors and windows.[2]
- Use 1 to 3 dots per 10 linear feet or square yard for light to moderate infestations, and 3 to 5 for heavy ones; more, smaller placements let more roaches feed at once.[2]
- Place the bait where people are unlikely to touch it.[2]
5. After you spray
- Check the placements now and then and add fresh bait as needed.[2]
- Clean up stray gel with a damp paper towel while it's wet, or scrape it off with a putty knife once dry, and throw it in the trash.[2]
First aid
- The label prints no step-by-step first aid; have the container or label with you when you call a poison control center or doctor, and it lists 1-800-888-8372 for emergency medical treatment information.[2]
Storage, spills and disposal
Safety and environmental hazards
People
The label signal word is CAUTION, with directions to avoid contact with skin, eyes or clothing and to wash after handling.[2]
Pets
The label says to treat only areas that are not easily reached by children and pets.[2]
Bees and pollinators
The gel label carries no bee warning; it is placed in cracks, crevices and protected spots rather than sprayed on plants.[2]
Fish and water
The label states it is toxic to fish and aquatic invertebrates and says not to apply it to pavement or other hard surfaces that drain to surface water.[2]
Common questions
- How much indoxacarb gel should I use?
- 1 to 3 quarter-inch spots per square yard or 10 linear feet for light to moderate infestations, and 3 to 5 for heavy infestations.[2]
- Can I spray roach killer where I put the gel?
- No. The label says not to apply the gel to surfaces recently treated with a residual insecticide.[2]
- Can I use indoxacarb gel outdoors?
- Yes. The label allows spots or thin beads at pest entry points and harborage sites outdoors around the home.[2]
Sources
- University of California Statewide IPM Program, “Home and Landscape Pesticide Active Ingredients Database: indoxacarb.” ipm.ucanr.edu/home-and-landscape/pesticide-active-ingredients-database/active-ingredient-details/?uaiKey=147 (accessed 2026-10-06)
- U.S. EPA Pesticide Product Label System, “Indoxacarb Cockroach Gel label, EPA Reg. No. 100-1504 (EPA-stamped, Aug. 23, 2019).” www3.epa.gov/pesticides/chem_search/ppls/000100-01504-20190823.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)