Desired trap characteristics from the end-user perspective:

1. Affordable – low material cost for each trap unit
2. Incorporation of baits made from universally accessible and inexpensive ingredients
3. Local trap production with local materials by local vector control programs
4. Operation without the need for use of electricity or batteries
5. Small size and low weight for ease of transport and non-invasive indoor deployment
6. Minimal release of odors to ensure acceptance of use within human dwellings
7. Capacity for collection of live or dead mosquitoes
8. Capacity for indoor and outdoor use

Water-sugar-yeast (WSY) CO2-producing bait:
1 g of baker's yeast and 50 g of kitchen sugar are added to 200 ml of warm water and mixed until dissolved

Homemade BG-Sentinel style trap operated with electrical power and baited with water-sugar-yeast solution

This trap captured mosquitoes in a field evaluation but not very effectively relative to backpack aspiration (Fernandez-Salas, unpublished data)

And the search for an inexpensive and effective trap for indoor surveillance of Aedes aegypti goes on...