Clear Down D2D Files

Hi

I was wondering if any one has a post script if on completion of backing up the D2D files to tape it clears down the D2D files older than a particular age.

What i am trying to achieve is basically to save space on our D2D landing zone, currently we back everything up to Disk and then back it up to tape, occasionally i go in and remove the last months worth of .bkf files due to no space, i was wondering if there was a way to automate this?

Thank You