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The primary attractant for moles is food. With a powerful sense of smell, they seek out grubs, earthworms, ants, and other insects in the soil. Other factors can also draw them in, such as moist, loose soil which makes tunneling easier, so an overwatered lawn can be an invitation. Additionally, male moles may enter your yard to expand their territory or find a mate, and if a neighbor has a mole problem, it's possible for them to tunnel over to your property.

Possums don’t typically pose a danger to humans—they prefer to stay out of sight. If they feel threatened, they play dead instead of engaging. However, they can become aggressive when cornered, typically when they become trapped inside your home or when a dog chases them. When this happens, it’s best to call a wildlife control service near you to remove possums safely.

Some disadvantages of crawl spaces are mostly regarding the air itself—moisture build-up and poor ventilation, which can cause problems both in the house and underneath it, even damaging the foundation itself. Crawl spaces are difficult to access and often invite unwanted pests during the hot summer months and the cold winter ones. These hard-to-seal spaces are also susceptible to water damage during periods of heavy rain or melting snow.

Whether dryer sheets can keep squirrels away is a bit of a mystery because the evidence is entirely anecdotal. Many households claim to have success with using dryer sheets for keeping squirrels away by placing them throughout their attics, yards, on a clothesline, and any other area where squirrels like to run through. Squirrels do not like strong scents, so if you try using dryer sheets, the ones with the strongest scent may be the most effective.