In Copenhagen (and I think it's similar in most of Denmark) there's a fireproof cupboard in the basement of my apartment building for hazardous waste. Houses have a small red box they can leave out if they have something.

Making hazardous waste disposal inconvenient seems like a good way to have it end up in the normal waste stream.

https://affald.kk.dk/affaldsfraktion/saadan-sorterer-du-farl...