We have a cat but it is too preoccupied with repelling other cats.

"Norbert" wrote in message
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"Kaz" wrote in message
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Does anyone have an effective method of preventing mice from ring-barking
saplings? I have just lost several dozen potted Acers, Willows and fruit
trees (and last winter and the winter before!). Any ideas gratefully
received.
Christina

Get yourself a couple of cats! They will keep the mice down.