Must be kept clean, round 3-metre radius of greenhouses to prevent accumulated sewage as a source? The source of the pathogen buildup and pest disease, such as rats, etc.
Must have a radius of 3 meters maintain cleanliness around the house to prevent the accumulation of sewage. Source of pathogens The tent of animal-borne diseases such as rat.
Must be kept clean around the house, Halo 3 meters so as to prevent a collection of sewage collection of germs and the dwelling of the carrier of the disease. Such as mice, etc.