Rated 5 out of 5 stars
Uses minimal resources and makes it a cinch to add IAT support to your own extension.
Not sure why a previous reviewer is complaining about "undocumented" features, a very quick glance at the options plainly states IAT will clean up whatever folder you use as a cache.
If you use a folder with important documents in it then you should expect them to be cleaned as well...
Of course you'd expect important documents to be backed up