

I have also decided against prodiamine for the last bits of poa annua this year, and instead will be spot clearing and seeding a few places that have a mix of poa annua and poa triv.
Having Bermuda and not having to worry about grass seed germination, I push the pre-emergent pretty hard, about 4 times a year.
I have almost completely eliminated the Poa out of my yard. Last year, it completely took over. There is some left, but the pre-emergent should keep it from coming up next year.