
01/18/05, 09:50 AM
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Join Date: Dec 2003
Location: Colorado
Posts: 1,274
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Fixing the barn gap is the best strategy with the longest term results. Any of the methods above, except the buckwheat or the dead bird, should solve the problem forever.
There is only one poison labeled for use on birds. It is called a dispersant because while the birds are feeding, the first few to get a poison kernel will start going into cardiac arrest. In dying they flop about and give off distress signals. The first bird alarms the others, the second and third scare them because they don't know why their relatives died. They crowd around the suffering birds and after a few die they get spooked and leave forever. There are a few problems with this approach. First the product is restricted use and you can't get it. Second, other birds can move in soon after the first group leaves. Third, its hard to control which or what kind of birds get the poison. I don't like killing birds (except maybe pigeons), so I rarely use this stuff.
You can by a 1/2 inch mesh bird netting at home deport. It would be cheaper than hardware cloth, steel wool, or canned foam. Another advantage to the netting is the ease of use. The method of attaching anything will be determined by your barn. Since I haven't seen your barn, I can't give real specific advise. Drywall screws work well and you can use scissors to cut up anything plastic to make washers, like a gallon jug or a 2 liter soda bottle, or a plastic bucket. You can start the screws in the plastic washers before you get on the ladder. The foam would degrade quickly unless painted, plus you would have to ladder a lot more. Not only does every hole have to be filled, the stuff is messy (NOT non-toxic), it can burn your skin and ruin anything it gets on. I think the netting at the bigbox stores is 4x50 (I buy mine in 14foot widths and length to order) so you could cut 8 inch x 50 ft strips and get 300 linear feet from one roll. You might be able to attach it every 6 - 10 feet.
You didn't say whether the birds could get in through the barn door. Still, if you close the gap all at once, they may leave immediately instead of looking for new entries.
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