Josh is correct. For many technical founders in particular, bullshit free is like a secret. If there is more than one person involved, something can no longer be a secret, and the environment can, by definition, no longer be bullshit free.
Clear boundaries, communication and reasoning and limited overhead go a long way to eliminating the wider perception of bullshit. However, you'll never achieve bullshit free, because you'll always have team members where "bullshit free" :== "my way."
Also having leaders that tackle the bullshit for the team and work hard to let the team run as far and as fast as possible will go a long way toward creating a workplace and creative endeavors that people love.