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When woodpeckers start banging on your walls or roof, they are probably looking for insects to eat, storing nuts for winter, drilling a hole to make a nest, or communicating with other birds to establish territory or find a mate.

The size of the hole can help determine the reason for the pecking. Small irregular holes are a result of insect hunts. Acorn holes are more consistently sized and often fitted with a nut in the middle. Nest holes are large and have rounded edges. If the bird is pecking to mark its territory or attract a mate, it may leave dents rather than holes, and the noise will stop when the mating season starts in spring.

Squirrels rely heavily on their sense of smell and are deterred by a variety of scents. Some of the most effective smells for repelling them include peppermint oil, coffee grounds, white vinegar, garlic, cinnamon, rosemary, and predator urine. They also have a strong aversion to capsaicin, the compound that makes chili peppers hot, making capsaicin-based sprays an effective repellent for areas like gardens or bird feeders. For a DIY solution, you can create a spray from garlic and vinegar and apply it daily. Additionally, squirrels dislike strong, fresh scents, so placing items like strong-smelling soaps or dryer sheets in areas they frequent can also help keep them away.

When looking for natural roach repellent options, citrus, bay leaves, cucumber, garlic, and catnip may all help to keep cockroaches away. When an infestation requires a bigger intervention, boric acid, baking soda, diatomaceous earth (DE), and soap mixed with water are all considered natural and nontoxic roach treatments.

Roof rats are relatively small rodents that typically measure around six to eight inches in length (excluding their long, scaly tails that are often longer than their bodies). They have sleek black or brown fur, pointed snouts, and large ears. In general, they are typically smaller and darker in color than common brown rats.