Strong scents like peppermint, rosemary, lavender, citronella, and others can repel woodpeckers—as pungent smells can overpower their senses. For that reason, you might consider making a homemade spray with one or a combination of these scents to spritz around areas of your home where woodpeckers frequent.

It can be difficult to know what type of animal is in your attic until you see it. But several clues can help you narrow down the suspects:

• Sounds: Smaller animals like rats and mice make scurrying and tapping/gnawing sounds. Larger animals like raccoons and opossums make louder clambering noises. Also, note when animals are noisy: Squirrels are active during the day, while rats are busiest at night.

• Droppings: Rats and mice leave small, rice-shaped droppings (the rat’s version is significantly larger). Bigger droppings belong to larger critters like raccoons. As long as you’re not squeamish, an image search can help you identify what you’re seeing in your attic.

When in doubt, take photos of damage or other evidence and show them to an experienced pest control pro.

Some animals, such as bats or birds, will be able to get out of chimneys on their own since they can fly. Other animals, however, may have a harder time and will require the help of a professional to escape. Squirrels and raccoons in particular may become stuck inside a chimney, especially if you have a buildup of soot or creosote inside. This can prevent them from being able to climb out, in which case you’ll need to call an animal control expert to help remove them.

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.