Heat is the most effective instant killer of bed bugs. Exposing them to temperatures above 131 degrees Fahrenheit for over an hour can eliminate them. Methods like steam cleaners and using a dryer on high heat are effective for this. Other options that can kill bed bugs on contact include EPA-approved pesticides, bleach, disinfectant sprays with alcohol, diatomaceous earth, and hydrogen peroxide. While freezing can work, it is not an instant solution, as it can take several days at 0 degrees Fahrenheit to be effective. Keep in mind that many DIY treatments won't reach bed bugs hidden in cracks or behind walls. For severe infestations or the most effective results, it is best to hire a professional exterminator for a professional heat or chemical treatment.

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.

Hanging wind chimes or motion-activated speakers near your home may be an effective way to deter woodpeckers, as sudden movement and sound often scare birds away. You could also try using reflective decorative items such as pinwheels or mirrors or placing decoys of large predatory birds in your yard. If these measures don’t deter the woodpeckers, you may need the help of a bird removal pro.

Experts have mixed opinions about spraying spiders. A recent study found that chestnut and peppermint oil have a repelling effect on some spider species, but were ineffective at repelling others. You should consult with an expert exterminator to find out what works best to repel the spiders living in and around your home.