You can find a variety of humane bird repellent sprays online and at home improvement stores. However, if you want to try a DIY method that will keep birds away without harming them, mix some water, dish soap, and a few drops of peppermint oil and spray the area you want bird-free. Peppermint oil is a notoriously lovely smell for humans, but birds tend to avoid it.

The best animal repellents for gardens include a variety of different scents. You can use predator urine to keep away deer, raccoons, squirrels, and more. The odor will tell the critters that your yard is a dangerous place. Other scents that repel critters are herbs like lavender, geranium, and mint. You can also use hot pepper, garlic, and strong-smelling soap.

Look for goose repellents that contain the ingredient methyl anthranilate. This is a natural chemical found in grape juice. In human food, it’s often used as grape flavoring. With geese, it’s highly irritating. Grape Kool-Aid contains methyl anthranilate, the active ingredient in most bird repellents. It won’t harm geese, but it will deter them.

An owl's worst enemy in the wild is often other raptors and environmental factors. Among the avian threats, larger owls or other birds of prey can pose a danger, engaging in territorial disputes or competing for food resources. Terrestrial predators like foxes, raccoons, and larger mammals may target owl nests or young fledglings. Environmental factors like severe weather conditions, habitat loss, and food availability changes can also significantly impact owl populations.