I bought these 10+ years ago and placed them on my 60 young trees in my backyard home orchard. They attracted earwigs and caused cracks, etc due to the closely held wrapping. We have a lot of rabbits and after I took these off, we did lose a tree to wringing. However, many of my mature semi-dwarf plums, apples, pears, and cherries have permanent damage on the bark around the base of the tree. Perhaps I didn't use them correctly though I thought I followed the instructions given when I purchased them. My trees were very slow in growing and I did leave them on for several years. If I were to do it over again I would use a collar of chicken wire tall enough to discourage rabbits (1'?) and with enough space for the tree to grow, but I'll never use these again. I'm disappointed that these are being sold still unless there is additional instructions on how to use them (clean them out once a month, remove them after x months on the tree, etc). Hope those are added.