4.—(1) No person may bring on to or take from the licensed premises any vehicle or equipment carried with that vehicle that is contaminated with animal excreta.
(2) This paragraph does not apply to—
(a)any vehicle or equipment contaminated with excreta from animals being carried on the vehicle at the time it is brought on to the licensed premises;
(b)any vehicle or equipment contaminated with excreta from animals which have been unloaded from the vehicle on the licensed premises;
(c)any vehicle or equipment brought on to the licensed premises solely for cleansing and disinfection, if taken directly to the cleansing and disinfection facilities immediately upon arrival.