We live in the Hudson Valley on a 7 acre largely wooded property. Lots of active wildlife. My husband and I noticed recently that some animal or animals have been chewing on the protective outer portion of the mini split lines. We installed the heat pump system 2 years ago. Friends have suggested it may be mice, chipmunks or even a ground hog. How best do I protect these lines lined going forward so we don’t have a big problem in the future?