This depends on if their needs are being met. They'll likely return night after night if they have access to food, water, and adequate shelter. If this changes, they’ll look for another roosting spot. This is why bright lights and other dissuading factors often work when removing bats from a property.

It's advisable to avoid using harmful methods to eliminate birds. Poisoning birds is inhumane and can have unintended ecological consequences, affecting other wildlife and pets. Similarly, using firearms or other lethal means poses safety risks and could be illegal in many areas. Sticky substances like adhesives can cause birds to become trapped and injured. Lastly, playing excessively loud or distressing noises can stress birds and humans. Focusing on humane and environmentally responsible strategies is essential when dealing with bird issues.

DIY animal removal is rarely a good idea and is not advised for many reasons. First, these types of animals can carry diseases and, therefore, pose a health risk to you, your family, and your pets if mishandled. Second, depending on your city or municipality, it may be illegal to remove or handle wildlife yourself. 

Sealing your home against these animals yourself is also a bad idea. Trapping an animal under your house will cause odor and insect problems when it passes away. 

High-frequency bird repellent devices are effective at driving away birds, which is their intended purpose. However, these devices also tend to have unintended negative consequences. For example, if you or your neighbors own pets, the high-pitched noise emitted by these electronic devices will cause them distress and may even make them aggressive.