I had problems with my computer running slow and looked into a registry cleaner, after a lot of research and
talking to people.
I sped my computer up by going into tools, internet options, deleting cookies and clearing the
history, also you can run disc cleaner, disc defragmenter.
Also I run AVG free. and sometimes run malwarebytes anti maleware.
I found Anti virus programs that you pay for can really slow your computer down.
I'm thinking the reason you want to clean your registry is because your computer is running slow.
If so try AVG and do what I did.
Dont try to clean your registry. Thats for professionals.
And I wonder if they even clean it or just do something like I am telling you to do.