Nancy Guthrie: Pool cleaners show up at her house amid police probe

12:39 PM PT -- Pima County Sheriff Chris Nanos tells TMZ ... the Guthrie family requested the cleaners come by to maintain the pool. Another strange development in the search for Nancy Guthrie ... pool cleaners are hard at work at her Tucson home after her alleged kidnapping. Several reporters on the ground in Arizona shared video of work trucks fr...