There are 8 small white dots on the edge of the PG. Each square represents a small experiment of 2 chemicals labeled to remove Poa annua from Creeping bentgrass. I have experimented numerous times with these two chemicals with little success. In fact, neither are labeled specifically for bentgrass greens. They are only labeled for turf mowed at tee and fairway height. However, it is worth the test and to keep experimenting.