California pepper spray laws let any adult 18 or older buy, carry, and use pepper spray for self-defense, provided the canister holds no more than 2.5 ounces, dispenses as an aerosol, and carries the required warning and expiration labels. The spray is regulated under the state’s tear gas statutes in Penal Code Section 22810, and using it for anything other than self-defense is a wobbler offense that prosecutors can charge as a felony carrying up to three years in county jail.1California Legislative Information. California Penal Code 22810
One terminology note before the details: California’s Penal Code calls pepper spray “tear gas.” The statutory definition in Section 17240 sweeps in any substance, including oleoresin capsicum, intended to produce temporary discomfort or injury when vaporized or dispersed.2California Bureau of Security and Investigative Services. Clarification Regarding Tear Gas and Other Deadly Weapons Every rule below applies to the small canister in your bag just as it would to a larger device.
Who Can Legally Buy and Carry It
Section 22810 opens with a general permission: any person may purchase, possess, or use tear gas solely for self-defense. The statute then carves out specific people who cannot.1California Legislative Information. California Penal Code 22810
- Anyone under 18. Sellers also cannot furnish pepper spray to a minor.
- Anyone convicted of a felony under federal, California, or any other jurisdiction’s laws.
- Anyone convicted of any crime involving an assault, even a misdemeanor.
- Anyone previously convicted of misusing tear gas under subdivision (g).
- Anyone addicted to a narcotic drug.
The felony and assault bars apply no matter where the conviction happened, including other states and other countries. If you fall into any of these categories, keeping even a small canister in a purse or glovebox is unlawful.
Canister Size, Delivery, and Labels
Three product-level rules apply to every legal canister sold or carried in California.1California Legislative Information. California Penal Code 22810
The container cannot hold more than 2.5 ounces of aerosol spray by net weight. This limit is smaller than what some other states allow, so a canister bought legally elsewhere may be illegal to carry here.
The spray must be delivered as an aerosol. Projectile-based tear gas devices, grenades, and launcher-style products are off-limits for civilians.
Each canister must carry two labels: an expiration date, and a warning that reads, “WARNING: The use of this substance or device for any purpose other than self-defense is a crime under the law. The contents are dangerous — use with care.” A canister missing either label does not meet legal requirements, regardless of where you bought it.
Where You Cannot Carry It
Legal ownership does not mean legal everywhere. Penal Code Section 171b prohibits bringing unauthorized tear gas weapons into state or local government buildings where public employees work, including courthouses and city halls. Law enforcement and certain other officials carry under separate authority.
K-12 schools prohibit students from carrying pepper spray on campus or at school activities, and adults bringing a canister onto school grounds should expect scrutiny. UC and CSU campuses generally permit lawfully owned pepper spray meeting the 2.5-ounce and labeling rules, though individual campus policies can add conditions.
Penalties for Misusing Pepper Spray
Using pepper spray for any purpose other than self-defense is a wobbler under Penal Code Section 22810(g)(1). Prosecutors decide whether to file it as a misdemeanor or a felony based on the facts and the defendant’s record.1California Legislative Information. California Penal Code 22810
- As a misdemeanor: up to one year in county jail, a fine of up to $1,000, or both.
- As a felony: 16 months, two years, or three years in county jail under Penal Code Section 1170(h), a fine of up to $1,000, or both.
Although the felony sentence is served in county jail rather than state prison, the conviction carries all the long-term consequences of any felony, including losing the right to own firearms.
Using It Against a Peace Officer
Using pepper spray against a peace officer performing official duties is charged as a straight felony: 16 months, two years, or three years, a fine of up to $1,000, or both. The enhancement applies when the person knows or reasonably should know the target is a peace officer.
The Lifetime Bar After a Conviction
A felony conviction under Section 22810 permanently bars future possession of pepper spray under subdivision (a). A misdemeanor conviction specifically for tear gas misuse does the same under subdivision (g). One incident can strip the self-defense option for life.
What Counts as Self-Defense
The whole statute hinges on the phrase “solely for self-defense purposes.” When misuse is charged, the question becomes whether a reasonable person in the same situation would have felt threatened enough to deploy the spray, and whether the response was proportional. Spraying someone during a verbal argument you could have walked away from will not qualify. Spraying someone lunging at you in a parking garage likely will.
Lack of intent is a separate defense. If the canister discharged accidentally, or you did not mean to hit another person, that undercuts the misuse element the prosecution has to prove. Accidental discharges happen more often than people assume, especially with canisters lacking a reliable safety mechanism.
Peace officers are exempt from the civilian restrictions and carry under departmental rules. Certain licensed security professionals operate under separate requirements administered by the Bureau of Security and Investigative Services.2California Bureau of Security and Investigative Services. Clarification Regarding Tear Gas and Other Deadly Weapons
Taking Pepper Spray Out of State or on a Trip
The rules change the moment you leave California or board certain carriers. The TSA allows one container of pepper spray in checked luggage on commercial flights if it does not exceed 4 fluid ounces, has a safety mechanism to prevent accidental discharge, and contains no more than 2 percent CS or CN tear gas by mass. Pepper spray is never allowed in carry-on bags, and individual airlines may impose additional limits.3Transportation Security Administration. Pepper Spray
Amtrak bans all tear gas and chemical sprays in both carry-on and checked baggage, with no self-defense exception.4Amtrak. Prohibited Items in Baggage If you are taking the train, leave the canister at home.
Other states set their own size limits, age minimums, and formulation rules. A canister that meets California law can still break the law at your destination, so check before you pack.