The driver or owner of a vehicle used in conveying animals which said driver or owner has reason to believe died of disease, shall, immediately after unloading said animals, cause the bed, box, tank or other container of such vehicle, the wheels thereof, all canvas and covers, the feet of the animals drawing said conveyance, and the outer clothing of all persons who have handled said carcasses to be disinfected with a solution of at least one part of creosol dip to four parts of water, or with some other equally effective disinfectant.
Iowa Code § 167.17