I wish to purchase two electrical appliances/devices. The first to annoy mice in the loft space and the second to stop dog barking. How can I be sure that the frequencies produced by these products will not also annoy both bats and owls?
Thank you. There are mice in the roof space but also, in some years, bats. Not every year but I am pleased to see them catching insects outside when they are there. The dog belongs to an adjacent neighbour the other side of a dip along which owls sometimes fly on the lookout for food. An odd situation perhaps but yes, bats and owles are around.
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