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Like a rent-controlled apartment in New York City, rodents know a good thing when they see it. If they've found a cozy nest inside your home, they will set up camp and stay there, leaving only to forage for food and water. As long as they have a warm place to sleep, raise their young, and continue access to water and food, they're going to stick around.

Yes, both hobo and wolf spiders resemble brown recluse spiders, both in habitat and physical appearance. However, these species lack the tell-tale violin-shaped markings under the head that classify a brown recluse. Both species also have shorter legs than the dreaded brown recluse.

Some species of bees (not to mention hornets) are aggressive and dangerous to have in your walls. If they swarm in anger or defense, they could badly hurt people in your home. Other species of bees are largely harmless and many people live in close proximity to them.

Either way, bees making hives in your walls usually causes damage. It can contribute to moisture problems, and attract other pests. Those problems get even worse if honeycombs build up. So we strongly suggest you find a way to keep bees from taking up permanent residence.

Bed bugs bite your body to feed on blood. When they bite, they inject an anticoagulant, which is why you may see blood stains on your sheets if you have an infestation. The bed bugs tend to bite in clusters, so the bite marks will look like itchy, red spots in zigzagging lines of three to five bites per cluster on your skin.

The bites are itchy, but for most people, they do not cause serious or long-term health complications. Itching the wound excessively could lead to an infection, and some people are allergic to bed bugs.