Does my clean pc really work I seen it on t.v commercial does it really clean or does it make it worse ?

Update: Has anyone used this for their computer mycleanpc on the commercials it looks to good to be true and its free not sure about that? My computer is slow but dont want to make it worse with this if it does not work or make it worse?
Update 2: thankx Joseph I tried giving u a thumbs up but I have to b level 2 to do it that suckz but to all thank you very much as well I am glad i read this before doing it why do they put this on tv it crashes your pc ?deinmutt thank u for that I ll keep that in mind sorry to hear that happened to you .
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