carb in liquid cultures

[navot1 at agri.huji.ac.il]

In the discussion about carbenicillin it was made pretty clear that for growth
of colonies on petri dishes it results in less background of sattelites due to
the inhibited breakdown of carb.
Will it also work when growing bacteria in a liquid culture to saturation?
(since the beta lactamase breaks down amp in a liquid culture sometimes
allowing for non plasmid cells to totally take over the culture?)
Sorry if this question was asked already but I seemed to have missed it)
Thanx, Ilana