A report from an airport in the United Kingdom shows that, over a seven-month period, drug-sniffing dogs failed to find any hard drugs.
But they did find lots of food.
BBC reported that although importing potatoes, meat and dairy from outside the U.K. is illegal, using dogs to detect those items is wasteful, according to local immigration and law enforcement.
The inspection comes from the independent chief inspector of Borders and Immigration, who reviewed border checks at the Manchester Airport in Manchester, England.
The report found that the hard drugs, designated as "Class A drugs," were not at the expected level.
The U.K. government defines Class A drugs as crack cocaine, heroin, LSD, ecstasy, magic mushrooms, methadone and methamphetamine.
The Border Force, part of Home Office, which manages border control and immigration, spent $1.4 million on kennels, according to the report.
The review said that based on the results over the period of the inspection, it was a low return on investment for the department.
"A senior manager agreed that there was a lack of innovation in the use of the dogs, and told us that a new management structure was being put into place to take a fresh look at their deployment," the report said.
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