A gopher was going after my best apricot tree, tearing up a large swath of earth. I tried to banish it with used cat litter, but it came back. The day I installed the sonic repellents, it left. I kept the spikes in the ground for a few weeks just to make sure. The gopher didn't return, but a new one did. The repellents drove the new one off in two days. I removed the spikes and thought I was done. But a few days later, I saw fresh mounds in a different part of the same plot. So I reinstalled them. I think our neighborhood infestation is so bad that I'll have to leave these repellents in place indefinitely. I feel very lucky to have found them and hope they last a very long while.

Makes a lot of noise.

Makes a loud beep.