Review on 🐛 2020 Ultrasonic Pest Repeller - Indoor Plug-in Repellent for Flea, Insects, Mosquitoes, Mice, Spiders, Ants, Rats, Roaches, Bugs - Non-Toxic, Safe for Humans and Pets - 4 Pack by Leisa Norman

They were well packaged. that was it. not all would turn on when plugged in (a blue light would come on), which I don't think really mattered since the few that turned on were doing nothing. I contacted customer service, they sent me more to replace the ones that didn't work and I had to send back a box of the ones that didn't work. This box also had ones that didn't work. I couldn't come to Kolya to get everything back because it takes 45 minutes which is about 2 hours round trip. Not worth my time but very upset with how many dollars we spent only to ship about half the scope of delivery twice. AND THERE ARE MICE