Yes, you can carry mace in California without a permit. Any adult with a clean record may buy, possess, and carry pepper spray or mace for self-defense as long as the canister holds no more than 2.5 ounces of aerosol and the carrier isn’t a prohibited person.1California Legislative Information. California Penal Code 22810 – Tear Gas and Tear Gas Weapons You can carry it openly or concealed. California’s statutes don’t use the words “mace” or “pepper spray” at all; the law calls these products “tear gas” and treats them the same.2California Public Law. California Penal Code 17240 – Definition of Tear Gas
Who Is Allowed to Carry It
The default rule is simple: 18 and older, no permit needed. Minors aged 16 or 17 can also buy and possess pepper spray, but only with a parent or guardian present at the purchase or with written parental consent.3California Legislative Information. California Penal Code 22815 Anyone under 16 is barred.
Four categories of adults are prohibited from possessing it under Penal Code 22810, regardless of age:
- Anyone with a felony conviction under federal, California, or any other state’s laws.
- Anyone convicted of any assault-related crime, including misdemeanors.
- Anyone previously convicted of misusing tear gas.
- Anyone with a known narcotic drug addiction.1California Legislative Information. California Penal Code 22810 – Tear Gas and Tear Gas Weapons
The assault rule catches people off guard. A misdemeanor assault on your record is enough to disqualify you, even without a felony. If you’re in one of these categories, possessing the canister at all creates criminal exposure, whether or not you ever use it.
Size, Type, and Labeling
The canister can hold no more than 2.5 ounces net weight. It must dispense as an aerosol spray, so pepper-ball launchers and projectile devices are not covered by this self-defense statute.1California Legislative Information. California Penal Code 22810 – Tear Gas and Tear Gas Weapons
Every canister sold in the state has to carry a printed warning that it’s for self-defense only, plus an expiration date. Product inserts must include use directions, first aid steps, storage guidance, and a note on the legal consequences of misuse. If you order online from an out-of-state seller and the product arrives without those labels, you’re still responsible for staying within the size limit and other rules.
Where You Cannot Bring It
State and local government buildings are off-limits. Penal Code 171b bans bringing an unauthorized tear gas weapon into any state or local public building or into a government meeting required to be open to the public. Violations can be charged as a misdemeanor or felony, with up to a year in county jail or a state prison term.4California Legislative Information. California Penal Code 171b Courthouses and city halls are the typical concern. Leave it in the car.
Federal buildings set their own prohibited-item lists, and pepper spray is commonly banned in federal courthouses, post offices, and agency buildings.5Homeland Security. FAQ Regarding Items Prohibited from Federal Property
At airports, you cannot bring pepper spray through a security checkpoint or into an aircraft cabin. TSA does allow one container of up to four fluid ounces in checked baggage if it has a safety mechanism against accidental discharge.6Transportation Security Administration. Pepper Spray
Schools are the place where people expect a ban and don’t find one at the state level. Penal Code 626.10 lists knives, stun guns, tasers, and BB guns as prohibited on school grounds, but it does not include pepper spray or tear gas for K-12 campuses.7California Legislative Information. California Penal Code 626.10 No statewide statute bans it on college campuses either. Individual districts and universities can and do set stricter policies, so check the specific school’s rules before carrying.
When You Can Actually Use It
Self-defense is the only lawful reason to deploy pepper spray in California. You need a reasonable belief that you face immediate physical harm, and the response has to be proportional. Once the threat stops, continued spraying stops being defense and starts being assault.
Verbal arguments don’t qualify. Neither does road rage without a real physical threat, retaliation after a confrontation has ended, or a prank. Even brandishing the canister in a threatening way when no physical threat exists can be treated as unlawful use. The standard is the same one that governs any other self-defense claim: reasonable force to stop an imminent threat, and nothing more.
What Misuse Costs You
Using pepper spray outside of self-defense is a wobbler. Prosecutors can charge it as a misdemeanor, carrying up to a year in county jail and a fine up to $1,000, or as a felony, carrying 16 months, two years, or three years in state prison on top of the same $1,000 fine.1California Legislative Information. California Penal Code 22810 – Tear Gas and Tear Gas Weapons
Spraying a peace officer performing official duties is automatically a felony. The misdemeanor option disappears, and you face 16 months, two years, or three years in state prison. The statute only requires that you knew or reasonably should have known the person was acting in an official law enforcement capacity.
Taking It Out of State
California’s 2.5-ounce limit is more permissive than some other states. A canister that’s legal here can get you arrested elsewhere. New York caps canisters at 0.75 ounces and restricts purchases to licensed firearms dealers and pharmacists. Massachusetts requires a license to carry. Michigan limits you to a specific formula. Hawaii caps capacity at half an ounce and bans online sales entirely. Check the destination’s rules before you travel with your canister.