Is the generic version of Certainty, Sertay, just as good?

Looking to kill some grassy weeds in my new Bermuda sod. Have had for 2 weeks and it's green and growing thanks to all the rain, but so are the weeds, which seem to be mostly grassy weeds.

Iis Sertay, the generic of Certainty, just as effective on weeds?

When should I apply to new sod? If at all during the first growing season?