How do I kill all these screens?

There are several suitable screens on:
        10087.pts-0.mc  (Detached)
        31248.minecraft (Attached)
        3307.minecraft  (Attached)
        1784.minecraft  (Attached)
        2634.minecraft  (Attached)
        19952.minecraft (Attached)
        19859.minecraft (Attached)
        32357.minecraft (Attached)
        10335.minecraft1        (Detached)
        23865.minecraft (Attached)
        19253.minecraft (Attached)
        959.minecraft   (Attached)
        6478.minecraft  (Attached)
        6441.minecraft  (Attached)
        24526.minecraft (Attached)
        26669.minecraft (Detached)
        2600.minecraft  (Attached)
        1414.minecraft  (Attached)
        1062.pts-0.shores2510   (Attached)
        23839.minecraft (Attached)
        25275.minecraft (Attached)
        4954.minecraft  (Detached)
        2687.minecraft  (Detached)
        9813.minecraft  (Detached)
        24249.minecraft (Attached)
Type "screen [-d] -r [pid.]tty.host" to resume one of them.