too many big words!
A product called Gallant NF herbicide. You can spray a grassy shrubbery and it only kills grasses
Yes, weed killers can kill grass. This happens when the herbicide kills non-selectively on contact.
an herbicide called cimarron by Dow kills bahia. good luck.
one type of grass that kills plants can be Johnson farm grass. they have poisonous roots to plants but not humans.
Fire and Herbicide .
There is a selective herbicide that only kills weeds and there is an unselective herbicide which kills everything it comes into contact with and I am not sure about the third one.
Drive, I am guessing MSMA or DMSA ( monosodium methanearsonate, disodium methanearsonate). These herbicides are very effective in such control. Unfortunately, the federal government has seen fit to ban their production. As I understand, homeowner applications have already been banned, and this will be the last year for commercial use.