Quackgrass in the yard... grrr

Wow!  So it seems that last year somehow crabgrass got a foothold in my yard, and this year it has permeated just about everywhere in my garden and on the side of my house.  Noelle and I are establishing a garden this spring, and it wasn't until now that I realized how bad it had become.  So what is to be done?  For herbicedes, Drive and Acclaim Extra have shown good-to-excellent efficacy for postemergent crabgrass control.  However, I really don't want to use toxins in my lawn.  The only other option is to remove all the grass and start over, so for now I am reluctantly using Drive in hopes that the crabgrass will die off.