give options for deletion in order of risk for those who are not tech savvy

Once the Drive Washer has identified the redundant items on the disk, it would be wise to give a risk assessment of items that can be safely deleted without concern (this is especially important to novice users as they often are unaware of files that are critical to OS operation). The rational for this is that a critical file deleted will result in an OS being inoperable... causing stress and frustration which this program was designed to alleviate. Ideally this application should be portable in order not to bog down the already taxed system resources (the whole reason for cleaning the disk in the first place). Hope this helps your development process. Wishing you and yours a very Merry Christmas. Alex.