You can test food for starch using Iodine solution which can be purchased from your local pharmacy or drug store. (kickas.org)
«Mechanical interventions included genital installation of large quantities of iodine solution instilled by urethral or vaginal catheters, or «hot boxes» where a person's body was put in a box to 43 °C to try to kill off the organism and not the host,» Allen says. (sciencemag.org)
Basic sanitation measures include testing of the cows to make sure they are disease free; washing the teats with iodine solution before milking; using a milking machine; and storing the milk in a stainless steel bulk tank, glass bottles or hard plastic bottles at a cool temperature. (westonaprice.org)