The basis for dairy products is safe milk from healthy cows. Farmers use antibiotics with great care, meaning it is used only within the rules and regulations of a farm treatment plan and the prescriptions of a veterinarian. Antibiotics are to be used only to treat sick animals, any preventive use is prohibited. When a cow is treated with antibiotics, her milk is not use for produce. Furthermore, after the treatment, the milk is not used for produce for a certain amount of time. To ensure that no milk with antibiotics residue is used, raw milk is tested intensively for antibiotics. Dairy products in store therefore contain no antibiotics.