Mosquitoes in the House
When these pests find their way inside through open doors or windows, they usually rest in dark, hidden areas within the house, but will come out at night to take a blood meal. Homeowners sometimes find mosquitoes under sinks or in closets and laundry rooms, but they are most common in backyards. Some species of mosquitoes like to rest in thick vegetation and wait for a suitable host to come near.
Mosquitoes in the Yard
Mosquitoes breed in standing water, so properties near ponds, marshes, and depressions that collect rainwater are at risk. Some mosquito species are active at different times of the day, but most emerge just before dusk and are active at night.
Mosquitoes can transmit several dangerous illnesses to humans, including Zika virus. This rare disease affects pregnant women and may lead to birth defects. More common in the U.S. are West Nile virus and several kinds of encephalitis. These mosquito-borne diseases may also have serious side effects. According to a recent CDC statement, the number of illnesses caused by mosquito bites tripled between 2004 and 2016.
Annoying signs of mosquito activity include the buzzing of the females and their bites. People have differing reactions to bites, ranging from mild irritation to intense inflammation and swelling.