Clean My Mac question?

you would do well to uninstall CMM. all it is good for is causing major issues within macOS. and there are NO other apps I would recommend for that purpose. macOS itself does a really good job of maintaining itself.

I would recommend that you read Effective defenses against malware and other threats - Apple Community. it's a long article, but worth your time to read every word.

Q - " delete purgeable files"

A - Purgeable files are the Total Domain and Managed by the Operating System

A - When the Operating System deems additional space is required, it will transition partition of the " Purgeable " space back to the Empty Space on the drive.

A - AFAIK, there is no User Method to hasten this transition process

A - It can take a few days before the Operating System will relocate some of the Purgeable to Empty Space

Any of the below should be removed per Developers Instructions or better still, Never be Installed on this computer ever.  

1 - Disk Cleaner 

This will include CleanMyMac , aka “ BrickMyMac “

MacKeeper,

Dr Cleaner Pro Plus

Open Cleaner one Pro

Macmechanic

Read some of the posting and arrive at your own conclusions.

macOS already does those things. CMM just interferes with macOS doing those things.

In addition to the excellent suggestions above I would add that it is clear to me that a lot of people out there also install various 'junk' applications which cause their problems and should have never been installed in the first place. Keep your computer clean and only install proven apps that you have a real need for.

I've recently been getting ads on Facebook which says that

Clean my Mac is "endorsed" by Apple or "notarised" by Apple

(whatever that means.) yet all the advice on here is not to touch

it with a bargepole. I notice too that a lot of the Mac magazines

recommend it. It is so hard to make an informed decision about

this. Because there is so much misinformation out there. Do

Apple actually say anything about it?

Richard Pearce1 wrote:

Thank you which means those ads on Facebook are very naughty.

I haven't seen them so I can't say but they could be. I don't frequent Facebook. Much of what's online is misleading.

FWIW, Apple does not "endorse" or recommend any third-party software.

Just to add, I have never seen Apple say anything good or bad about third-party software. Not in 30+ years.

Thank you which means those ads on Facebook are very naughty.

FYI and Only for information purposed as related to Apple Endorsing Third Party Applications ? 😎

Statefulfirewall - Apple Community

P. Phillips wrote:

FYI and Only for information purposed as related to Apple Endorsing Third Party Applications ? 😎

I'm aware some Apple support personnel have recommended Malwarebytes.