At what point do you bother isolating a new web app you're testing?

I spent twenty minutes yesterday clearing out random extensions and temporary bookmarks I had added over the past month.

I always tell myself I’ll test a tool for five minutes and remove it if I don't like it. Instead those trial extensions just sit in my top bar consuming memory and cluttering my tabs.

It made me realize I need a better system for trying out new launches without ruining my primary browser setup.

What’s your current routine when you want to try a new app do you use a temporary guest window, a distinct browser, or just keep it simple in one window?