You had a crabgrass treatment done and you still have crabgrass!
The following article may help you understand why it is so difficult to get rid of this weed.
Starting next year in July we will be adding another application to the fertilization schedule. We will be using a post-emergent crabgrass control that just became available to us two (2) weeks ago. We are currently using this product now, at no additional charge, to kill off the crabgrass before it goes to seed.
