We always test spray our new customer’s Buffalo Lawns (ALWAYS).
There are over 10 varieties of Buffalo sold in Australia and 3 of them can’t handle being sprayed with herbicides registered for Buffalo grass (Stenotaphrum secundatum).
Those 3 Buffalo varieties are ST26, ST85 and ST91.
As these have been sold for the last 40 years here in Australia, there is no way we can know what sort of Buffalo grass a new customer might have. So, in any case, we ALWAYS test spray the lawn.