ABSTRACT
The pest status of arthropods in the human environment may be based on one or more factors, including actual and potential disease transmission, strong psychological fears, and damage to food, fabric and shelter. Status as a pest can be attained simply by crossing the threshold of defined personal space without specific invitation. A control action is considered rational when the cost is less than or equal to the net increase in profit it produces. This kind of data is generally accurate, and can fairly represent the pest status of most agronomic pests. Pest status based primarily on economics is achieved by the few species that infest household fabric and fiber, and those that feed on or excavate and nest in the wooden portions of houses and other buildings. The pest status of insects and mites associated with humans and structures is usually based on the more discernible criteria of threats to health or the structure.
