I don't know what critters you're dealing with? I know rats will nibble at cords and cables till their teeth get black from the sparks. In Europe it was a problem with underground power cables, then they added stuff to it what wasn't as tasteful. It might help to keep the cord of the ground and put a trap close to it met that Magic stuff in it. Or plug one of those electronic devices in near the power cable. I live near forest and with those electronic devices the critters stay away (home, shop and TT). You have to distract those destructive critters. Good Luck!
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