Q: how to remove mac adware cleaner pop up window

You might want to start your own post since this one is from last year. A new post would be much more visible. You can link to this one.

Trash – Empty When File is Locked or in Use

Trash FAQ   

Trash won’t empty

Try booting into the Safe Mode to see if you can delete it.

Safe Mode - About

Safe Mode - Yosemite

Thanks for the tip! This was very helpful.

So is "Mac Adware " fake????

There is Mac adware, but popup windows telling you to download something are fake notices.

Thank you for this post that pop-up was starting to drive me crazy I couldn't get it to delete from my apps.