This is the third one of these I have made. I was desperate to keep the vermin out of my bird feeders, and thus designed this thing. So far the other two work pretty well. As long as the tape stays on they foil chipmunks and even big Grey Squirrels. It is pretty funny to see a great big skerverrel start up the post, get his head stuffed in the bottle, and fail to progress.
Hopefully they will continue to function as planned and this one will work too.
I use a 2-liter soda bottle and duct tape in the construction. Tin snips are employed to cut through the neck of the bottle to split it so it fits on the pole. Then scissors are used to cut the rest of the way down the bottle and to slice the bendy strips.
Kinda ugly, but the bottle is only worth a nickel deposit and I always have the tape on hand anyhow. Can't get much cheaper than that.
Good luck if you try one. LMK how it works out for you.