It's a small plug-in device, roughly the size of a car key fob. You put it in a wall outlet, and it stays there, running continuously. No app, no batteries, no setup beyond finding a socket.
It's built to repel pests, not kill them. That
...
distinction matters more than it sounds. If you want dead bugs in a trap, this isn't that product. If you want bugs to decide your house isn't worth living in, that's the pitch.