Air breathing arthropods that have eight legs with fangs that inject venom. Spiders are world wide on every continent except Antarctica. Only a few spiders have venom that is dangerous to humans and many are nocturnal.

There are 30 species out of 4500 associated with human habitats. The four most commonly known species are American, German, Oriental, and Asian. The cockroach can adapt to a variety of environments, but prefer warm conditions found within structures. They are mainly nocturnal and will run away when exposed to light. Cockroaches leave chemical trails in their feces and emit air born pheromones for swarming and mating. These chemical trails transmit bacteria onto surfaces.

The most common termite is subterranean. These are the type most likely to attack your home. All subterranean termites are social insects that nest in underground colonies. There can be millions of termites in a colony, but there may not be any evidence for years.

Ants are social insects that form colonies ranging in size from a few dozen to millions. Ants live outside but will sometimes invade homes and buildings looking for food and water.

Bed bugs are parasitic insects of the Cimicid family that live exclusively on blood. Bed bugs are mainly active at night, but are not exclusively nocturnal. They usually feed on their host with out being noticed. Bed bugs can cause a number of health issues including skin rashes, allergic reactions, and psychological problems.

Fleas are the insects forming the order Siphonaptera. They are wingless with mouthparts made for piercing skin and sucking blood.

Rats are various sized, long-tail rodents. They live mainly around garbage cans but will occasionally invade homes looking for food, water, and shelter.

Wasps are stinging insects in the order Hymenoptera. Wasps build their nests in a variety of places, often choosing sunny areas. Nests are commonly located in holes in the ground, along riverbanks or small hillocks, attached to the side of walls, trees, or plants, or underneath floors or eaves of houses. Wasps will attack and sting humans if they feel threatened.