Abstract: The invention is an erodible antimicrobial caulk composition having a sanitizer and a hardener which controls the consistency and the dissolution rate of the composition once subjected to an aqueous flow. Also disclosed is a method of preparing the erodible caulk composition. These caulks are useful in institutional food preparation and food serving environments including restaurants, hospitals, day care facilities, nursing homes, and the like as well as institutional food harvesting and processing environments including food and beverage processing plants, dairy farms and dairy plant operations, red meat, poultry and fish preparation and processing environments, and the like, including post process food transport and distribution channel environments such as trucks and grocery or foodstuff retailers.