Bests & Worsts Reviews from Amazon

We moved in around October 2016 in the new house and there were tons of cockroaches! I checked Amazon and found these sonic repellants. After a week you can see the difference. I would occasionally find some outside our door but not inside. It was pretty cool. We have small Chihuahua/Terrier/Corgi mix and it doesn't bother her at all. Totally recommend!