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A motion detector connected to a light or noise maker would keep wild animals away.
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My garden was invaded this summer by two legged varmints twice. They took everything, and by that I mean every tomato bigger than a dime (green or ripe) was swiped along with all the cukes, Peppers, and Zuchinni
They cut the chain on the gate and left shoe prints in the mud.
36 tomato plants, 20 Pepper and 6 hills of Zuchinni. I got three tomatoes on the 2nd of July for all my spring work putting the damm thing in. They were awesome but not worth that effort.