Police dog handler talks with colleague as sniffer dog waits outside GMEX (Greater Manchester Exhibition centre) in Manchester northern EnglanA team of sniffer dogs set up at a British airport at a cost of 1.25 million pounds ($1.7 million) have proved adept at discovering small amounts of cheese and sausages but not so good at finding smuggled drugs, a report said on Thursday. An inspection of border security at Manchester Airport in northern England found that during a seven-month period, the six dogs had failed to find any illegal class A drugs, those considered the most dangerous such as heroin or cocaine. "The deterrent effect of the detection dogs was difficult to measure, but seizures alone represented a low return on investment, given 1.25 million spent on new kennels and the costs of operating the unit," said the report by the Independent Chief Inspector of Borders and Immigration.