It depends on how much time you spend online and how much you store on your computer. Generally, it’s recommended to do a thorough cleaning at least once a month, but if you use your computer heavily every day, you may want to do a quick cleanup more often. These cleanups should include defragmenting your hard drive, removing temporary files, running scans for viruses and malware, clearing the recycle bin and emptying other junk folders, and removing unnecessary programs or apps.