2 of 3 people found the following review helpful
Voles coming and going,
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This review is from: PestBye Battery Operated Sonic Rat and Mouse Repeller - Ultrasonic Rat & Mouse Repellent
Had a family of bank voles with babies seemingly under the shed, but couldn't see exactly where.
Put the unit in expecting it to take up to four weeks for them to leave because such creatures apparently won't leave until the young are ready to leave the nest.
In the days that followed they were restless, going in and out a lot.
Moved the unit closer to them, and did not see them for weeks.
Moved the unit back to the original location in the shed giving wider cover, voles again seen going in and out.
Moved the unit back to the closer point, have not seen them since.
The unit therefore seems to be effective provided it is placed as near as possible and in direct line with where the creatures are coming and going.
Recommended as an effective way of dealing with such where there is no electricity supply.