How to Treat Bird Mites
One of the interesting aspects of bird mites is that they require birds to survive. Even though they will bite humans, the only way they can survive is if they feed on avian blood. The blood from mammals will not sustain their development or allow them to reproduce. Further, bird bites cannot lay viable eggs on the human host. Therefore, since bird mites need birds to survive, if you want to get rid of bird mites, then it makes sense to get rid of the birds.
This is kind of a nasty job sometimes, but it's the only way that you can be successful. You must remove all of the nests and all the mess that was left by the birds. You want the area to be as clean as you can possibly make it. You should always wear full protective equipment when you do this. This would include rubber gloves, a long sleeve shirt, long pants, safety goggles, and a respirator. You can use an N-95 mask, but I find that it's better to use an actual respirator. I will put a link below for one that is very cost effective. Always try to wet down the area that you are cleaning to help keep the dust down. This can be done with a spray bottle of cleaning solution. To clean larger areas, you may need to resort to a garden hose or even a pressure washer. As always, how you approach cleaning requires a bit of judgment.
After you finish cleaning, you should disinfect the area with a bleach solution or a commercial disinfectant.
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I said that bird mites need birds to survive, and that is true, but they can survive without birds anywhere from a couple of weeks to several months, depending on the species. During this time, they may attempt to survive by biting humans. Therefore, you may wish to eliminate them a bit sooner that nature would naturally provide.
To do this, let everything dry and then treat the area with a pesticide that is labeled for bird mites. A good product to use is Adjourn SC. Just mix the product 1.5 fluid ounces to a gallon of water and apply it with a tank sprayer. For larger areas you can also apply it with a 20-gallon hose-end sprayer. If you are going to use this method though, please watch my video on how to properly use a 20-gallon hose-end sprayer. The link is below. Try to get the product into all the cracks and crevices, as well as the surfaces where the birds were nesting.
If you have bird mites in your home, then you also need to treat inside as well. To do this, you can use the same product, but you should only use it as a crack and crevice treatment. You need to treat cracks crevices that you find around windows, doors, under baseboards, and any other place where bird mites may be harboring. Pay particular attention to rooms where you are having most of the problem.
Birds are often a recurring problem. If that is true in your case, then you need to do something to prevent the birds from coming back. There are all sorts of products on the market that are designed for this purpose. Just search for bird stakes on Amazon and you will see a variety of such products. Just select the one that would work best in your situation. Most of them involved installing devices that make it impossible for the birds to land or nest. These devices probably work the best, but if you like, you can try other methods such as fake predators, and that sort of thing. Personally, I don't think those things work very well, but some people swear by them. In any event, if you don't want bird mites, then you must make sure that you do not have birds.
Adjourn SC: Adjourn SC Fast Acting General Insect Control
Video on how to use a 20-gallon hose-end sprayer: Easiest Way to Use a 20-Gallon Hose-End Sprayer. Secret Method.