Bed bugs are most active when we are most inactive, typically from 2 a.m. until 5 a.m. They are cunning, and adjust their schedules according to their victims. If you work at night, for instance, your bed bugs will flip the script.

Using rat poison in your crawl space can be risky. While it may kill rats, they can die in hard-to-reach places, causing foul odors and attracting other pests. Yikes. Moreover, secondary poisoning can happen to pets if they consume poisoned rats. If you decide to use poison, consult a local exterminator for guidance to ensure safety and effectiveness.

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.

As a general rule, if you hear an animal in your attic, don’t assume it will stay there. Animals are drawn to warmth and food sources, which could lead them to other parts of your house. In particular, it’s likely that small pests such as rats and mice that only need tiny gaps to squeeze through will end up in your walls and ductwork. Larger animals like raccoons may be limited to an enclosed attic.