I love that it is able to scan multiple devices at once, which makes cleanup very quick! It also has an option for you can schedule scans so they are not always running in background but this works well with my needs as sometimes other programs want to use resources while cleaning up old data or files - especially when doing large backups of drives where there was no problem previously (e-mail server). But overall great program!! There really isn't anything about its functionality right now except maybe having more options would be nice like being allowed select folders rather than just drive level selection; however if used correctly then definitely have fun using OLD TIMER. As stated above scheduling will help keep your computer clean without causing problems such scanning/cleaning too often during day time hours because many people don’t realize how quickly things grow back again after their turn goes by -- hence why scheduled helps out alot here. !