Where an ant or roach plan begins
UC IPM's ant advice is to caulk the entry points, store food in sealed containers and clean up crumbs and spills. It says to avoid spraying pyrethroids such as bifenthrin and cypermethrin outdoors on hard surfaces or around building foundations, because they pollute waterways. Ask a company what it plans to spray outside and where.
What ant and roach treatment costs in California
Our estimate for an ant or roach treatment in California is $185 to $375 per treatment. It's built from one national range and adjusted by California's pest control wage ratio of 1.09, and it isn't a quote.
No California company price for this job is in our count. A severe infestation is estimated separately in the table, and a company quoting well above the ordinary range should say what it found.
| Item | Figure | What it is |
|---|---|---|
| Estimated range, not a quote | $185 to $375 per treatment | Built from one national published range, adjusted by the California pest control worker wage ratio (1.09). Five California companies (Sacramento and Fresno) advertise a starting monthly plan price and one prices a one-time treatment, but the units differ company to company, so no company price anchors a plan estimate. One company prints a regular price for a one-time treatment, too few to move that estimate. Basis: no state company sample (no counted California company price for this job), national estimate only. |
| Estimated range for a severe infestation, not a quote | $740 to $1,500 per treatment, severe infestation | Built from one national published range, adjusted by the California pest control worker wage ratio (1.09). Five California companies (Sacramento and Fresno) advertise a starting monthly plan price and one prices a one-time treatment, but the units differ company to company, so no company price anchors a plan estimate. One company prints a regular price for a one-time treatment, too few to move that estimate. Basis: no state company sample (no counted California company price for this job), national estimate only. |
| Pest control worker wage, California mean | $24.21 an hour | BLS mean pay for the workers, May 2025, which isn't what a treatment costs you. |
| State fee, Applicator license | $35 to license, $35 to renew | The licensee bears this fee, and your invoice doesn't list it. Effective July 1, 2025. |
| Surety bond, registered company | $12,500 | The bond B&P 8697 requires of a company, held with an admitted surety insurer. |
Estimated range. Built from national published ranges (1 source), adjusted by California's pest control worker wage ratio to the US (1.09, BLS May 2025), with no permit fee added because pest control has no city permit. Not a quote. Five California companies (Sacramento and Fresno) advertise a starting monthly plan price and one prices a one-time treatment, but the units differ company to company, so no company price anchors a plan estimate. One company prints a regular price for a one-time treatment, too few to move that estimate. We have no counted California company price for this job, so the range is our national estimate alone. Full method. Prices as of Oct 23, 2026.
Carpenter ants nest in wood
UC IPM says carpenter ants excavate wood to make nests and don't eat it the way termites do, and that they're particularly common in forested foothill and mountain communities. Photograph any winged insect before a company treats it. The termites page covers the termite side.
Cockroaches: sanitation and baits
For cockroaches, UC IPM puts good sanitation and exclusion first, says baits give better control than sprays and tells you to identify the species before acting. If a company proposes sprays alone, ask why.
Spiders: the black widow
UC IPM says the black widow is the main spider in California that can cause serious injury, and that it generally stays outdoors and out of sight. Pesticides aren't generally effective against spiders, so its advice is to clear webs and the places they hide.
Ants and roaches: what can wait
- A swarm of winged insects indoors: photograph it before anyone sprays and show the company, because UC IPM says swarming termites don't always mean the home is infested.
- A trail of ants at a spill or a pet bowl.
- A roach seen now and then in a kitchen that is otherwise clean.
Steps to take before calling
- Photograph the insect next to a coin, or keep it in a sealed container.
- Store food sealed and clean up crumbs and spills.
- Caulk the cracks and openings where the insects come in.
- Hold off on outdoor sprays near hard surfaces or foundations.
- Ask the company to name the insect and the product before it names a plan.
Registration and insurance for ant and roach work
B&P 8505 lists insects among household pests and counts the use of pesticides for them as structural pest control. A registered company must carry liability insurance of at least $500,000 for bodily injury and $500,000 for property damage per loss under B&P 8692, and a $12,500 bond under B&P 8697. Ask for the company's registration number and look it up before the visit.
Ask for the company's state pesticide business license number and the applicator's name, and look both up with your state's pesticide regulator before any work starts.
Questions people ask
How do I get rid of ants in a California house?
UC IPM says to caulk entry points, store food sealed, and clean up crumbs and spills. It adds that spraying ants indoors with pesticides won't prevent more from coming in.
Do baits or sprays work better on cockroaches?
UC IPM says baits give better control than sprays. It also says good sanitation and exclusion matter and that pesticides alone won't solve a cockroach problem, so identify the species before acting.
Are pyrethroid sprays a problem outdoors in California?
UC IPM advises avoiding bifenthrin and cypermethrin outdoors on hard surfaces or around building foundations. The reason it gives is that they pollute waterways. Ask any company where it applies products outside.
Are black widow spiders common in California homes?
The black widow is the main California spider that can cause serious injury, per UC IPM, and it generally stays outdoors and out of sight. UC IPM says pesticides aren't generally effective against spiders and recommends removing webs and hiding places.
What will a California company charge to treat ants or roaches?
Our estimate is $185 to $375 per treatment, a model figure and not a quote. The range is one national figure adjusted for California pay. Ask a company what a repeat visit costs and what the first visit covers.
- U.S. Bureau of Labor Statistics, OEWS May 2025: Pest Control Workers (SOC 37-2021), California, mean hourly wage Read Oct 23, 2026.
- U.S. Bureau of Labor Statistics, OEWS May 2025: Pest Control Workers (SOC 37-2021), United States, mean hourly wage Read Oct 23, 2026.
- PestControlMatch: how we estimate costs, California (editorial policy) Read Oct 23, 2026.
- SPCB industry advisory: fee changes effective July 1, 2025 Read Oct 20, 2026.
- B&P 8697 Read Oct 20, 2026.
- UC IPM Pest Notes: Ants (pn7411) Read Oct 20, 2026.
- UC IPM Pest Notes: Cockroaches (pn7467) Read Oct 20, 2026.
- UC IPM Pest Notes: Spiders (pn7442) Read Oct 20, 2026.
- UC IPM Pest Notes: Carpenter ants (pn7416) Read Oct 20, 2026.
- UC IPM Pest Notes: Termites (pn7415) Read Oct 20, 2026.
- B&P 8505; SPCB: What is structural pest control Read Oct 20, 2026.
- B&P 8692; SPCB: start a pest control company Read Oct 20, 2026.
- SPCB: Search for a licence (DCA License Search); search.dca.ca.gov tested Read Oct 20, 2026.