MASUMRUN Ultrasonic Pest Repeller Best Pest Control Mouse Repellent Electronic Plug In Extreme Power Eco Friendly LED Device Outdoor/Indoor Eliminate All Types of Insects and Rodents Eco Safe

It's really great to buy this ultrasonic insect repellent. It's really satisfying. It's also the first time to use this kind of thing. I live here near the industrial area, so there are a lot of mice. If there is food in the kitchen, it will come. When I woke up the next day, there were often rats'excrement on the ground. It was annoying. So I thought about whether there was a simple and easy way to drive rats. This kind of ultrasonic rodent repellent could be effective in a few days. It might be smaller in my place, so the effect was better. In the past few days, there were fewer rats' excrement and the frequency of rats'excrement was slowly decreasing. Only after a few days did this happen. The effect, I think, is very good, insisting on using it can definitely drive away these hateful mice.

We were plagued with ants and drain flies in our storage room, near the restrooms... we couldn't figure out where they were from, or how to get rid of them, and didn't want to spray any toxic products, as the room has no windows (it's a basement). We placed a few of these, plus some of those little boxes with ant poison, and never saw any ants or flies again, which is absolutely brilliant!The ants poison boxes do not affect flies, so we believe these little devices actually did their job! :)

Seemed to work at first still getting flies and spiders in house

Seems to be working. No mice in the areas where they are plugged in.

Had these plugged in for nearly two weeks. Has the flies and bugs disappeared - no. Was it a waste of money yes I think so. Again another quick cheap fix that I should have not purchased.

Can’t tell if it works yet as it’s only been plugged in for 2 weeks but the constant clicking throughout the night is unbearable. Should have a warning- will loose sleep from the noise.

This pest repeller is harmless to human. I have a cat in my house, and I'm very worried that traditional pesticides will harm cats, but this one won't, because it's no poisons and no chemicals. And it will not make any noise when working, I love it.

There is a continuous click when turned on so we only turn on when the doors are open.