I ordered this product to replace a similar model I bought 2 years ago. So I have 4 repellents such planted in my garden. Everyone will see after their own interests, but for me the moles that infested my garden have gradually disappeared and never came back, so I could see that they were nearby.
Unfortunately this model, unlike the previous, did not last very long. One rainy winter and tags took water and drowned! While previous lasted over 2 and a half years.