Thanx Robio, I have known about AppCleaner since it came out many years ago, but in the beginning it didn't have the automatic functionality, so I dismissed
it because AppTrap was less obtrusive. After reading your message I decided to check it just in case it had changed over the years and there it is, it can now detect apps send to the trash and offer you the possibility of deleting all the associated files.
Right now I will be using both and see how it works.
Thanks again Robio and for anybody else that reads this, you need to activate the automatic behavior in Preferences of AppCleaner.
Cheers