If you were seeing a low-flying yellow airplane above the trees in Michiana on Thursday, May 19, there is no reason to be alarmed.

It was the DNR conducting aerial treatments to kill the spongy moth population in parts of Marshall, Noble and LaPorte counties.

The DNR says the spongy moth is one the country’s most damaging invasive species, having eaten leaves from thousands of acres of forests.

The planes were flying around 100 feet above treetops, spraying the chemical BTK to which they say is harmless to humans and animals.

To find out if your property is one of the areas that could be treated, you can check out the map on the Indiana DNR’s gypsy moth information webpage.