That's pretty funny. For me, they work pretty good against the pigeons. Honestly, if it were sparrows or some other type of bird making a nest in them, I don't

That's pretty funny. For me, they work pretty good against the pigeons. Honestly, if it were sparrows or some other type of bird making a nest in them, I don't know if I would care too much. Pigeons are pretty large and make big poops.