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.

To keep animals out, you must prevent them from entering. As long as they can get in, the problem will persist. That said, consider making your attic less inviting using deterrents like motion-activated lights or ultrasonic devices. Additionally, keeping a well-maintained, clean, and uncluttered attic that you regularly inspect for activity may make the space less attractive to critters.

In most cases, a mother bird will return to a disturbed nest after the disturbance has passed. However, it can be hard for a mother bird to find a relocated nest. So, while it’s false that a mother bird will abandon her nest if it’s been disturbed, it’s not a good idea to relocate a nest with live babies or eggs in it.

Identifying the specific animal running on your roof at night can be challenging without direct observation. Common nocturnal roof visitors include raccoons, squirrels, opossums, and rats. Raccoons are bigger and can create heavy thumping sounds. Squirrels are agile and may produce rapid scurrying noises. Opossums tend to move stealthily with less noise. Rats can make scratching or gnawing sounds. To determine the culprit, look for signs like footprints, droppings, or damaged areas near the roof. For accurate identification, consult a pest control professional or set up wildlife cameras near potential entry points.