Recycle your smoke detector for free at City Hall.
Although it is legal in Washington to dispose ionization detectors in the trash, Kirkland residents are encouraged to recycle it at City Hall for free, Monday - Friday from 8am to 5pm at the Recycling Center in the downstairs lobby. All smoke alarms are accepted.
Two common types of smoke detectors found in homes are ionization and photoelectric detectors. Ionization smoke detectors, the most common, contain a very small amount of radioactive material known as Americium-241. Photoelectric-type smoke detectors do not contain any radioactive material. Because of the long half-life of Americium-241 the amount of radioactive material in the smoke detector at the end of its certified useful life will be about the same as when you bought it. On your wall at home, smoke detectors presents no danger; however, when broken open in a landfill, the material can pose a health hazard.