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Review title: Limited effectiveness
Product review: I bought two of these units for large infestation of moles. Initially, they were very effective. You could see the tunnels streaming away from the units. However, within two weeks the moles adapted to the noise, and they were back full force. Changing the batteries to get the units back up to full tone was of no help.To date, the only non-lethal way to deal with moles that I have found seems to be castor oil spray, which is expensive, but seems to last 6 -10 weeks depending on rain levels. Wiping out food souces (grubs) also works, but I haven't found an effective non-toxic way to do this yet.
