That's the question. I'd like to find something that excels at finding whatever is left behind after I've trashed an app. Going forward, I am thinking of using AppZapper which looks pretty good but is limited to trashing stuff completely when you first go to delete an app. It doesn't know how to find useless stuff left behind after the fact. Ideally, I'd prefer something I can buy on the Mac App Store. If anyone has any suggestions for something excellent on the App Store that does what AppZapper does, I'd be interested in hearing about that as well please. It doesn't seem to me that I really need any other utility type software on my iMac. It's been running just fine for a year and half and still is. I just figure cleaning out old clutter is a good idea although I probably don't even "need" to do that. I do wonder sometimes though if the amount of space wasted is significant or not. I suppose it might be with games that have many save files, etc. hidden away somewhere. Thanks a lot for any suggestions you might have.