Birds may roost or nest in buildings, often gaining access through broken tiles and damaged ridge capping. This is usually a seasonal occurrence when birds are about to lay eggs. Pigeons, starlings, sparrows, myna birds are the frequent offenders.
Some birds nest in situations such as guttering and downpiping which then causes water overflow and moisture problems in walls. Their faeces also reduces the normal flow of water in guttering, causng corrosion in some types of metal guttering.
Birds are host for bird mites, which become occasional pests of humans when birds nest in buildings. The infestations inside houses and buildings occurs after the young have left the nest and these external parasites also leave in search of food.
Bird mites may be brought inside or occur in houses where birds are kept. When a nest is removed in a roof cavity and the area is not treated, these mites often cause temporary irritation to the occupants of the house.
Avoidance of infestations is the most satisfactory control measure. Once bird mites have attacked humans, they become a medical problem, since the reaction to their bites must be treated, particularly in sensitive or allergic people. Treatment of areas infested by bird lice is to eliminate them quickly from a house. This is often necessary using an insecticide approved for this use.
They are only temporary pests of humans and mostly enter houses or offices from vegetation, birds abandoning their nests in roofvoids and leaving mites without their normal hosts.
Once the pest technician has performed a bird proofing, it is common that the bird will try to gain entry by picking on the bird proofing wire as it believes its nest is still inside the roof void.
After the pest technician has performed a misting to kill the bird mites, you should vacuum thoroughly all available floor areas and wash all the bed linen in hot water.