Question: How do you kill all heroku workers?

I have tried:

`heroku scale worker=0`

and it doesn't work.

Answer: 
It depends on the stack.

The slider interface exposed via the website doesn't let you control Cedar stack applications, one of the following should do the trick though:

```
heroku ps:stop worker

```

or

```
heroku ps:workers 0

```
New way on Cedar apps is `heroku scale worker=0`