No, EndRun Herbicide is not labeled to treat dallisgrass. We have a Dallisgrass Control Guide you can review for steps on eliminating and preventing it in your lawn.
EndRun Herbicide with Trimec is not specifically labeled for knapweed. You may be able to use a product like Weedmaster instead.
We recommend using Endrun to treat for bindweed and oxalis in an ornamental setting. Spray around and underneath the shrubs during the cooler times of the day.
EndRun Herbicide with Trimec is a broadleaf weed killer only and will not effect poa annua. The best way to control poa annua in a Kentucky Bluegrass lawn is with pre-emergent herbices before it emerges. After emerging you can really only spot treat with a glyphosate based product and then reseed the areas with KGB.