Three prisoners serving life sentences in Colorado have taken the term jailhouse lawyer to new heights.
The inmates, being held in Walsenburg and Limon prisons, claim their lives have been threatened because they are being exposed to mosquitoes.
They said they are at risk of contacting West Nile virus or other diseases.
Last year, a Colorado Springs judge threw their case out, but they appealed.
Now the Colorado Court of Appeals has upheld the lower court decision.
Prison officials said no confirmed cases of West Nile virus have ever been found in the prison population, and inmates are provided mosquito repellent.