Yep, if you want. The big T will kill out whatever it'll kill (most things, really), and whiten the grass a little. Plus provide a 30-day pre-emergent shield against some weeds, give or take.

Or you can spray anything the Tenacity doesn't take out with something that does kill it later on.

I generally don't recommend blanket applications, but if you have a widespread problem...well, Tenacity is one of the least toxic ones around.

OK, thank you!

Just remember it takes practically forever to work and you'll probably need at least two applications.

Thank you. I will plan to spot spray rather than do the whole yard, which 3/4 acre. At what point, would I follow up with the second application?

Some say wait a week some say two weeks. This year I waited over two weeks because of lawn cutting and rain getting in the way. I think longer is better because it lets you see what is getting white and what isn't white enough.