Bees

Bees can cause problems around structures. Most are social insects that live in colonies. They aggressively defend their nests by stinging. The sting usually involves the injection of a venom that is a nerve poison. The sting may cause death in cases of allergy or when many wasps sting.
 

Bumble bee, Bombus spp. :  It nests underground in colonies of several hundred individuals. The nests are usually in abandoned rodent burrows, in mulch, or under logs or debris. The abdomen of the bumble bee is covered with hairs.

Honey bee, Apis mellifera. :  Honey bee colonies have 20,000 to 80,000 individuals. They are raised for honey and beeswax, and are essential for pollination of crops. The stinger has barbs, so that the stinger and the poison sac remain in the skin. Unlike wasps, honey bees can sting only once.

Honey bee swarm :  Most honey bee colonies are in hives managed by beekeepers, but some colonies swarm in large numbers and can be found outside. They may become established in house walls or eaves. The nests in walls can contain a lot of honey. If the bees are controlled or removed, the nest and honey should also be removed to prevent problems to the house.