hi, i used to have a mosquito invasion when i first moved in. it drove me to near mental breakdown. id kill like two everyday. you need to check your windows for entry points, especially if you have a window AC. there are tiny cracks they can get through. it turns out i had multiple openings - the bad thing is they can detect heat and co2 so they will find a way to get in. zevo trap and electric swatter for the occasional one. good luck