Cleansing and disinfection of paved premises
6. If (for a reason other than the presence of animals there) the premises become contaminated with animal excreta or other material of animal origin or any contaminant derived from animals, then the premises or those parts that have become so contaminated must be swept or scraped clean and then cleansed by washing and an approved disinfectant applied in accordance with manufacturers' instructions before any animals are allowed onto the premises again.