The Invasive Species of Idaho program has launched a form to track rat sightings as the pests continue to infiltrate the Treasure Valley.

Roof rats and Norway rats have been introduced into the state in recent years. As previously reported by the Idaho Press, a concentration of rats was first identified in the Eagle area. To address the issue, the Idaho State Department of Agriculture is seeking information to better know thy enemy.

Rats are notoriously difficult to remove once introduced into an environment, but what has made control more difficult is the inability for agencies to take action. There has not been a clear answer to questions on jurisdiction or funding.

“While non-native, the roof rat and Norway rat are not listed as Invasive Species in the State of Idaho,” the Invasive Species page reads. “Therefore, ISDA does not have the authority nor budget to take action on non-native rat infestations in the state.”

In lieu of action, information collected via the form will help paint a picture of how large the issue is.

The form provides a map to pinpoint the exact locations of sightings. The ISDA also asks submitters to include as much information as possible to identify the rat species.

A sheet on the website differentiates between roof rats and Norway rats. Roof rats have pointed noses, large ears and dark fur. Norway rats have blunter snouts, smaller ears and are typically gray or brown.

While roof rats are known as one of the most invasive species in the world, Norway rats can thrive in urban environments.

The rat sightings form can be accessed at invasivespecies.idaho.gov/rats along with more species-specific information.