MADISON (WKOW) -- As an invasive species is found in neighboring counties, experts are traveling the surrounding area to make sure people are on the lookout.
Officials at the Wisconsin Department of Natural Resources (DNR) say emerald ash borers have been found in Rock and Walworth counties. The invasive beetles kill ash trees by eating tissue under the bark.
Right now, none have been found in Dane County, but experts want to make sure everyone is prepared to handle them. An expert visited Madison's Farm & Fleet store Saturday afternoon to explain the risk.
"Usually by the time the agencies find it, it's usually been there a day or two because you don't see the damage right away," says Randy Ryder, with Bayer.
The beetles leave small D-shaped holes, and also attract wood peckers. Ryder says if you find them, you don't have to cut down the tree, you can call a professional or use products to kill the beetles.
Visit the DNR's website for more information.