Bat Repellent or Deterrent

This is a photo of an Evening Bat hanging from a tree. It's just resting. This isn't normally what bats do. They usually crawl into tight gaps and hide, all snug inside an enclosed space. This is why they love human dwellings so much - because they can often fly into small gaps - under fascia boards, eaves, vents, etc and then find a warm, dry, snug space to roost in. They don't really hang out upside down in trees like this.

If you do have bats in your home, and want to keep them out, or perform general bat prevention, I must inform you that there's absolutely no effective bat repellent or deterrent in existence. Here are the various ones that I've seen people unsuccessfully try:

Do Mothballs Keep Bats Away? No they do not. They're not registered for use in application for bat repellent purposes, but they don't work anyway. Mothballs are the generic "one product cures all" solution that I see for sale all over the internet, for any possible animal. Raccoon problem? - mothball-flake-raccoon-away! Squirrel problem? - Squirrel-Scare-mothball-powder! Etc. These products are bogus. As usual, I'll repeat the line I've had to repeat so many times. Go ahead and try them first, then call me when you see that it doesn't solve the problem.

Do Ultrasonic Sound Devices Get Rid of Bats? The Federal Trade Commission has issued a warning against these fraudulent and ineffective devices. Once again, this is yet another cheap "cure all" device that online retailers love to sell. People get suckered in, and I've been to countless houses that have these things running - sometimes up to a dozen of them, and the animals DO NOT CARE. These devices don't keep animals at bay. You can find whole essays online about what crap these things are, right next to hundreds of websites selling them, along with secret diet pills, magic wrinkle creams, and tiger whistles.

Strobing Lights - no.

Ammonia Soaked Rags - no.

Coyote or Fox Urine - no.

Look. Any time you see some sort of magic device for use on mammals, please think: mammals are mammals, like you or me. They're not insects, for which an easy solution (pesticide spray) exists. If I sprinkle some moth balls at the door to your house, or stick a little box in your living room that makes some noise, are you going to move out of your home? Because that's what it comes down to for animals. If they're living in your attic, that's their home, and it's not so easy for them to abandon it and find a new place - space is limited, many animals territorial, and when an animal finds a great spot like your attic, it KEEPS IT, regarless of what little tricks you throw at it.

Bat control is a specialty task. It's not a simple thing that you can solve for $29.95. The bats must be properly removed, all of them, in a lawful manner, and all of the entry points through which they can enter a building must be completely sealed. The droppings should be cleaned - fully removed, and the area decontaminated. If you are serious about having the job done correctly, then call a professional bat removal company.