A neighbor of the Odessa, Texas, mass shooter says she reported him to police last month — after he threatened her with a rifle for leaving trash near his property — but cops couldn’t find his house on account of it having no GPS address or electricity.

The woman told CNN that Seth Ator, 36, would often sit on top of his home and shoot animals at night, which he would then retrieve afterward.

She said cops tried to confront Ator following her report to them last month, but his property didn’t show up on GPS and was difficult to find.

Ator would often sleep inside his Toyota Camry with the heat on when the weather would get too cold, the woman said. He also had no running water.

Another neighbor told NewsWest9 that she, too, was visited by Ator — who showed up at her door with his rifle. It was unclear what sparked that incident. The woman said Ator owned at least two guns.

Cops shot and killed the Texas madman following his shooting rampage in Odessa on Saturday. He managed to kill seven people and wounded more than 20 others.