In the Sun Belt, a surge in population in recent years drove up housing prices, which fell dramatically when the housing market slowed--leaving subprime borrowers in the lurch when they try to refinance before the "teaser rates" expire on their adjustable-rate mortgages.
When a trap counts more than 10 flies in 30 minutes, or when the forecast model predicts a rapid surge in the fly population, it triggers an alert and sends a text message with the warning to farmers' mobile phones.