LOL!!--I wish it were that easy as the spurge is similar to Poa annua. These little weeds produce enough seeds........that are hard to be seen by the visible eye. They are so lightly weighted, that falling into crevices the width of a piece of paper, they will sprout in 5 days with little moisture.
This all reminds me of another thread that we could almost prove that mulches is contaminated with seed matter. It is almost like you can completely clean out a bed to be bare soil with a hoe or mechanical effort, lay the mulch at 4 inches and then in a week see more weeds emerge. Crazy!!