The tunnel test is used to measure the mortality and blood feeding success of host-seeking mosquitoes when they are exposed to an insecticide-treated net in an experimental chamber.
In the chamber, mosquitoes are free-flying and use host cues to locate a source of blood (non-animal bait).
The tunnel test can measure net-induced mortality and blood feeding success over an extended duration and is particularly useful for testing insecticides with excito-repellent (contact-irritancy) effects.
Reference: WHOPES_2013.1