A traditional approach to controlling mosquito populations is the use of Lethal ovitraps, which provide artificial breeding spots for mosquitoes to lay their eggs. These traps usually contain a chemical inside the trap that is used to kill the adult mosquito and/or the larvae in the trap. Studies have shown that with enough of these traps, Aedes mosquito populations can be controlled.[34] A recent approach is the automatic lethal ovitrap, which works like a traditional ovitrap but automates all steps needed to provide the breeding spots and to destroy the developing larvae.