I can vouch for that. A friend built one of these and since it worked really well, so I and some others built five more last year. Make sure to put a piece of w

I can vouch for that. A friend built one of these and since it worked really well, so I and some others built five more last year. Make sure to put a piece of window screen over the openings of the tube to keep insects and spiders out. If you have enough dexterity, you can even hide the screen inside the opening of the tube to make it less unsightly.