How to dispose of inhalers depends on the type. Metered-dose inhalers contain a pressurized canister of medicine and propellant that can burst if punctured or heated, so they should not be crushed, burned, or tossed in a fire. Many pharmacies and some manufacturers run inhaler take-back or recycling programs, and some household hazardous waste programs accept them. Dry powder and soft mist inhalers generally have no pressurized gas but still contain medication.
Types of inhalers
| Type | Pressurized? | Disposal notes |
|---|---|---|
| Metered-dose inhaler (MDI) | Yes, aerosol canister | Do not puncture or burn; take back or follow local rules |
| Dry powder inhaler (DPI) | No | Take back if medicine remains; otherwise follow local trash guidance |
| Soft mist inhaler | No pressurized propellant | Take back if available |
| Nebulizer vials | No | Medicine take-back for unused vials |
| Spacers and masks | No | Trash when worn out |
Why special care matters
MDI canisters can contain leftover medicine and propellant even when the dose counter reads zero. Propellants used in many inhalers are potent greenhouse gases, so recycling programs that recover them reduce climate impact. Heat from incinerators or compactors can rupture canisters.
Disposal options
- Pharmacy take-back: ask your pharmacist; some chains accept inhalers in collection kiosks, while others cannot because of the aerosol container.
- Manufacturer or mail-back recycling programs for used inhalers in some regions.
- Household hazardous waste programs that accept aerosols. See what counts as household hazardous waste.
- Local trash guidance: some communities allow fully used inhalers in the trash. Check with your waste agency before doing so.
Never put inhalers in the recycling bin unless your program specifically says to.
Before you dispose
- Check the dose counter. If doses remain and the medicine is still prescribed, keep using it until it expires.
- Do not spray out remaining doses to empty it.
- Remove the canister from the plastic actuator only if the program asks.
- Keep the cap on.
Unused or expired medicines
Inhalers with medicine left are drug waste. Medicine take-back days and kiosks are good options where inhalers are accepted. See returning unused medicine.
Related items
Aerosol household products follow similar logic. See how to dispose of aerosol cans. For needles such as epinephrine auto-injectors or insulin pens, see disposing of household sharps.
Talk with your provider
Some patients can use dry powder inhalers with lower climate impact, depending on their condition. Ask your health care provider before switching. Never change a prescribed inhaler on your own.
How to dispose of inhalers FAQ
Can I throw away an inhaler?
Some communities allow empty inhalers in trash, but check local guidance; never puncture or burn them.
Do pharmacies take back inhalers?
Many do or can direct you to a program; acceptance varies.
Are inhalers recyclable?
Not curbside, but special inhaler recycling programs exist in some areas.
Is an inhaler empty when the counter reads zero?
It may still contain propellant and medicine.
Why are inhalers hazardous?
Metered-dose canisters are pressurized and can burst when heated or punctured.
The bottom line
How to dispose of inhalers: never puncture or burn metered-dose canisters. Use pharmacy or manufacturer take-back programs, hazardous waste collection, or your local waste agency’s guidance, and treat inhalers with medicine remaining as drug waste.
Guides and tools
Household hazardous waste guide · Dump cost calculator · All material guides