Va. Code Ann. § 3.2-5115

No animal shall be permitted in any area used for the manufacture or storage of food products. A guard or guide animal may be allowed in some areas if the presence of the animal is unlikely to result in contamination of food, food contact surfaces, or food packaging materials. Additionally, a dog may be allowed within a designated area inside or on the premises of, except in any area used for the manufacture of food products, a distillery, winery, farm winery, brewery, or limited brewery licensed pursuant to § 4.1-206.1.