There are few mosquitos at Disney World even though it is in the middle of a swamp. They have a Mosquito Surveillance Program has various methods of controlling mosquitos. They have carbon dioxide traps to trap the mosquitos. The traps are analyzed to determine where and when insecticides should be sprayed. Typically they spray twice a day.

They also have chickens to determine if diseases are found in the mosquitos. An encephalitis scare in 1990 and 1997 had Walt Disney World telling guests to limit outdoor activities in the morning/evening and moving activities indoors if possible or canceling them altogether. In 2016, guests were given free insect repellent due to the Zika virus.