I dont know, but you should copy the production database to your local host and try it there, if you dont have enough testing data..
Usually its not recommended to run development gems in production.
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You can show the bullet output only in the bullet log files (this is not related to user on, but to all users in general):
config.after_initialize do
Bullet.enable = true
Bullet.alert = false
Bullet.bullet_logger = true
Bullet.console = false
Bullet.rails_logger = false
end
Afterwards you can watch the output in the bullet.log file