Many of the Mac user think that their system doesn't need antivirus program, but the think is nowadays Mac system all required cleaner due to various cyber attacks. There are various reasons for Mac computer slow down. An old Mac can store gigabytes of junk files and which can not only takes up space but also slows your Mac. To clean up Mac manually is not nearly enough and it takes more time. That's how lot of Mac cleaner software available. Read this blog https://antivirus.comodo.com/blog/comodo-news/essential-guide-for-mac-cleaner/?af=9557 and know how to speeding up your system by using Mac Cleaner.