If that barrier is broken, it's going to happen. Most of the time that'll be an inch, maybe two. I've seen dogs (male) scratch enough after taking a piss where's it's torn up...literally seen strips of Poa Annua like a divot because folks let their dogs out.
I've been using Pendimethalin for years because it's the only thing I've had success with controlling both seasons of crabgrass.
I sold a lawn service back in the early 90's to Orkin when they jumped into the business...to say the least, I do my own.