Hi all, are there any articles or best practice for cleaning old customization?

Are you talking about refactoring existing code or getting rid of an old customization?

I want to remove unused script and try increase performance

the tool that i sent you does that

Have you used this before?

no but they showed me a demo a year ago, and their system is smart enough to detect a list of scripts, fields, workflows, searches, reports etc that havent been used in a long time and make recommendations on what you need to delete