Review on WahooArt Ultrasonic Electronic Repellent Cockroaches by Brad Cao

Somehow we have a rat in our bedroom wall and we could hear it moving back and forth at night. I went to the attic to check, no chance went up there so I could set some traps in there (no). I was able to figure out where it went in, but by not pulling it out first I wouldn't plug the hole and then deal with a smelly rat in the wall. Since I didn't really have many options, I decided to take a risk. I always thought these devices were just a gimmick and a scam, but we really didn't have many options other than opening up part of the wall and installing a trap. There was all sorts of excitement the first night we plugged it in, it almost sounded like a bird was stuck in there. About an hour later the noises stopped and we haven't heard anything since. I'm totally amazed that it even worked remotely, not to mention that it worked just as well as before. I still can't believe it worked.