Basic XenApp question

We have recently started connecting to servers at a remote office using Citrix XenApp version 11.  Some users use the program neighborhood desktop icon, some use the web client.

We have some Microsoft Access databases that create a folder for the current user when they run.  We use an executable that creates the folder named as the user (i.e. 'JSMITH") on the network folder that is created for every Citrix user which is 'W:\" in our scenario.

The executable (which is fired by the user when they want to open one of the access applications) always looks to see if the folder already exists, and if not, creates it, then opens the database that it drops inside of it...(the users 'front end' if you will...)

This usernamed- folder can really be thought of as something like a 'session' folder.  When the user logs out of Citrix, it is no longer really needed.  

Since it can be created each time, automatically, I am wondering if it makes sense to delete it at the end of the users session?  Some users may go weeks or months without using these databases....

So my questions is this:   is it possible to use a script to delete the users folder when they log off Citrix?  Is there a log off script like there is a login script for Windows?  As you can surely tell, I am not a network guy, so I am a novice in this area....   but I can write a vb script to delete the current users folder- just don't know how it would be triggered to run...

Thanks for any insight..