Mosquitoes are small, flying insects that are typically about 1/4th of an inch long. They have a slender body and long, thin wings. Mosquitoes come in a variety of colors but are most commonly black or brown. They are most easily identified by their long, protruding mouthparts (called proboscis), which they use to suck blood from animals and people.
The best way to deal with mosquitoes is to eliminate their breeding grounds by getting rid of any standing water near your home. You can also use a commercial mosquito repellent to keep them away. Consider screens for your windows and doors. Sonic repellers can occasionally be useful, but not as powerful as chemical repellents.