Addon erasing?

How do I completely get rid of model addons? When I delete them, they still show up in the model browser but the files don’t exist, how do I completely delete them?

Delete “settings -> spawnlist”
You COULD go in there and delete the individual files, but that takes a while and it’s easier to just delete the whole folder. Gmod will re-create the needed spawnlists of the addons you still have.