Weed-B-Gone or anything with 2,4,D should be fine

Just use a hand cultivator and aim about an inch behind it.Plus you do 2 things in one when when you use this option.You take the weed out and also aerate the ground.Using any kind of chemical will probaly kill the surrounding grass too creating a brown spot that will look ugly.Of course if you have a ton of these weeds then my option might not be the best