I've never used a bike locker ...there are some at certain light rapid rail stations here in this city. And there's a monthly fee.

Instead during seasons when I do part of my work commute by bike, it's a communal locked bike locker in a parking garage...for employees. Still I do lock my bike against the bike post within the locker as extra precaution.

Similar set-ups in parking garages..for 2 other employers. Some were fee-based, others were not.

Still another employer site, I was allowed to park in a locked maintenance area.

At another employer site, there were concerns of bikes falling over onto employee cars (these car owners were....court judges) because it was difficult to find a place to lock up the bike within the guarded parking garage.

For 2 summers, I had to lock up my bike outside with a pile of others, at street level. A different employer.

Both Toronto and Vancouver have enough bike thieves.