The fastest way to get there is by using Command+Shift+G in the Finder to access the “Go To Folder” function, then just paste
You will see a folder like this:
If you want to back these up you can, otherwise just delete them by dragging the .db files to the Trash, and then kill the Dock again from the Terminal to force the databases to regenerate.
killall Dock (In Terminal)
Tagged: refresh launchpad