How do i uninstall and remove every file of Daz 4.7?

in New Users
I want to re install Daz 3 , but it seems that every time I try to unistall 4.7 and then install 3 that 4.7 comes back like black mould in a bathroom.
How can I make sure that every single file and anything related to 4.7 is removed? In simple plain englsih if you can.
Comments
What you are saying really should not happen at all, DS3 and DS4.7 can exist on the same machine, and one does not affect the other.
First of all, are you sure that what you are installing is DAZ Studio 3? Did you download the installer from your Product Library or did you have one on your machine already?
If you uninstall DS4.7 using DIM or an uninstaller, then it should no longer appear on your machine. If you are running an installer for DS3, and it is reinstalling DS4.7 then you are not using the correct installer.