I do have mesh-tops for all of them but don't even bother to lower the tops. I captured and then "relocated" 23 squirrels last year, so their involvement with my orchids was minimal. I have begun a capture and release program again this spring, and have trapped 4 so far. My next door neighbor has an old homestead in a rural part of the state, 60 miles from here, and he wants to relocate every squirrel I trap to his property. In fact, I trapped a squirrel this morning and took it to the neighbor. He is headed out to that rural land to release the squirrel.