While many cities claim the title, Casselberry, Florida, and various parts of the Florida Everglades are often cited, though pest control companies like Orkin often rank Los Angeles or Chicago as the "mosquito capitals" based on service calls. Scientifically, Florida is the most mosquito-dense state due to its tropical climate, high humidity, and abundant standing water. However, the title of "Mosquito Capital of the World" (or at least the U.S.) is often jokingly or seasonally attributed to Everglades City or Sanibel Island. In terms of sheer volume and public health impact, West Coast cities like Los Angeles have seen a massive surge in recent years due to the arrival of the Aedes aegypti species.