How To Delete Alert logs

[ad14]

I set an Alerts that do search and save the result in a text file,
that Alerts create logs an fill up my storage
how can I set the Alert to not saving logs or delete the logs?

I am using Splunk 6.1 and My Alerts set up to every 5 min

[woodcock]

You can control the amount of time Splunk saves searches via various ttl settings and yours are probably too long-lived. See here:
http://answers.splunk.com/answers/4881/scheduled-saved-search-retention.html