Thankfully, there are third-party Mac applications that you can use which make cleaning up your Mac faster, more efficient, and usually just requires the click of a button. While cleaning up your Mac can be done manually, it can require a lot of time and some technical expertise to know exactly what to remove. If this sounds familiar, it may be time to for you to consider cleaning up your Mac. And the worst case that you might experience is that your apps will not open anymore or perhaps they keep on crashing every time you attempt to use them. You may also begin to see that your Mac starts to boot up slowly as well and applications may take a minute to fully launch it on your Mac. However, as time passes and you are using your Mac, files, applications, and some downloads will also pile up causing your Mac to run slower than it was before. And also, trying to boot up your Mac will only take you a couple of seconds. With just one click, the application or file that you chose will instantly appear on your screen. When you first get a Mac, the first thing you experience from it (aside from “it just works”) is the incredible speed and performance.