Carl Johnson has to search for a total of 100 gang tags all around Los Santos and spray over them the Grove Street Families' emblem with a Spray Can. For a tag to be completely sprayed over it is needed at least 29 units of spray can "ammo". Tags and their basics are first introduced during the mission Tagging Up Turf. Spraying over an enemy tag increases the player's respect and respraying all 100 tags is required for 100% completion.