arsload shouldn't leave log files behind. Maybe you have an intermittent script that produces them. If you have files left over after the fact, you might want to remove the '-n' option from arsload if you're using it.
Otherwise, the way a lot of my customers handle this sort of thing is to create a script that removes files one they reach a certain age, and schedule it to be run via cron. You can also add the step of compressing the files (compress/gzip/bzip2) after they're processed in order to keep the space requirements to a minimum.
If you can give us some more information about what types of files, or what commands you're running, we might be able to suggest more solutions.
-JD.
