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Sour Zkittles has been seen in California. Look for Sour Zkittles in these cities: Brisbane, Daly City, Broadmoor, Millbrae, South San Francisco, San Francisco, Belmont, Burlingame, Hillsborough, El Granada, Half Moon Bay, Menlo Park, North Fair Oaks, Atherton, Portola Valley, Mountain View, Pacifica, Redwood City, Emerald Lake Hills, Woodside, San Carlos, Sunnyvale, Palo Alto, East Palo Alto, Stanford, San Mateo, Foster City, San Bruno.