An insecticide known as methoprene is one of the prime chemical suspects in the search for a cause for the deformed frogs reported in Minnesota and other states. Methoprene has been under suspicion because of its similarities to a compound which produces deformities in laboratory animals. The Metropolitan Mosquito Control District has used methoprene for years to control mosquitos in twin cities wetlands. The agency insists there's no link between methoprene and frog deformities, but others are not so sure. Minnesota Public Radio's Mary Losure has more.