Film that contains silver should not be disposed of in the trash. Some older film, produced prior to 1951, can contain nitrates, which are highly explosive. Learn how to identify if your film contains nitrates.
If you developed any film at home and have a used fixer solution, it contains silver and should not be poured down the drain. Bring the film and fixer solution to a household hazardous waste collection site for free.
If the film does not contain silver and nitrates, it can go in the trash.