There are 3 different types of summons:
Cheeky Sugar Cube: They just run and have the haste ability.
Mint Drop: They run, and sometimes teleport close to you.
Truffle Worker: They run, and at this phase you may get superdrunk (dwarven ring does not work).
If you are an ED, kill them with your rod.
If you are a MS, kill them with your wand.
If you are a RP, kill them with diamond arrows.
If you are an EK, kill them with your melee weapon.
Unfortunately, EKs end up having a greater disadvantage because they cannot kill the summons from a distance. If you fail to kill them, I recommend standing in a corner of the room waiting for the hex effect to end.