Review on 🐭 Merratric 6 Pack Electronic Ultrasonic Pest Repellers - Indoor Plug in Pest Control Repellent for Mice, Cockroach, Spider, Ant, Mosquito, Bug, Insect - Ultrasonic Technology by Anita Fernandez

I was very happy to receive it after reading such good reviews. My story started when I caught 7 mice in one night in my kitchen so I was looking for something to prevent more mice from entering my house. After carefully reading where to place these blocks and how much space each takes up, I decided to use 2 blocks in my large kitchen, placing one block high at countertop level and the other at the bottom of my island. I used the last 4 to place one in each room of about 300 square feet each. It's been 12 days and I've killed 5 wasps, a palmetto beetle and a water beetle. I was away for a 3 day weekend and noticed that I have mice again. They chewed on my bread, bagels, climbed into my snack box, my towel box, and tried to chew on the small bag of dog food I sealed in two tightly tied grocery bags before I left. And of course they left tracks in every area as further proof that they were here. Needless to say I am very disappointed and will be returning these devices and going back to good old mousetraps, sticky traps and poisoned food containers. I hope you will consider all reviews like mine when making your purchase.