This maybe something you all have talked about in the past..but I need some help as I have 2 barn swallows that are making my garage a home. They are right above my back door and are making a mess. I think they are good for eating mosquitos..but I really don't need the mess at my door. I cleaned the nest away and wiped with Clorox hoping they would not like the smell...but sure enough they were back a few hours later. I keep the garage open so the dogs can get in out of the sun so shutting the door isn't an option. I also tried closing the door 3/4 way and that didn't work either. Any ideas?