Prevention of Allergy can be through the cleanliness. Persons suffering from dust allergy should ensure the periodical washing of the pillow and mattresses they use. They should be washed with hot water at a temperature of 60 degree centigrade. The flooring of the house should be with good type of tiles. The carpet on the floor gathers good amount of dust which gets into the room air due to the fan and air conditioning. The drapes and curtain in the house should also be washed regularly to avoid accumulation dust in them affecting the health. Vacuum cleaner can be used to clean the house and the vacuum bags are also to be thrown out regularly.