Once you are finished collecting your data, you can delete it all at once. You can drag the folder to a collection bucket on the bottom left. Thankfully, DaisyDisk makes it easy to reclaim the data with a drag and drop function. As you can see, mine has 95 GB free prior to the scan. Once you launch the app, it will show your current free space. DaisyDisk is my favorite tool for doing a deep dive into what is on my hard drive.
Do you ever look at the free space on your Mac Hard Drive (Click the Apple Logo → About This Mac → Storage) and wonder what is taking up all that space? It happens to me all the time.