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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.

Groundhogs are most active during the warmer months, from spring through fall. On a daily basis, they exhibit peak activity in the early morning (dawn) and late afternoon (dusk), which are their primary feeding times. They tend to stay in their cool burrows during the hottest, sunniest parts of the day. Groundhogs hibernate during the winter, typically retreating to their dens from October or November until mid to late February.

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.

Raccoons are primarily crepuscular and nocturnal, meaning they are most active at dawn, dusk, and throughout the night. While less common, they may come out during the day to find food, especially in warm months or during the spring birthing season (April and May) when caring for their young. Seasonally, raccoons are active year-round and do not truly hibernate. However, during periods of severe cold, they will often remain in their dens for extended periods.