I've seen some chats where once a ban is set, it is never removed. Weither it be from someone banning for the sake of banning, or an akick from services that never gets removed. I have a way of having that ban only last three hours, and then it's gone.

on *:BAN:#:/timer banremoval 0 10800 /mode $chan -b $banmask

you can change the 10800 (3 hours in seconds) to however long you want. This helps channels keep ban list nice and tidy.

you can also do that via Fantasy if you have a Botserv bot in your channel. Its:

!tkb user(or host) 1s/m/h/d(Seconds, Minutes, Hours, or Days) reason.