This is the last of a string articles from a project on use of larviciding, using b.sphaericus granules of a "kitchen counter" formulation, and bit of environmental engineering for mosquito control. The method provided better than 90% mosquito reduction in the intervention zone. The results were detailed in previous reports from the study in two urban areas in Burkina Faso.
The last article is on the feasibility of the intervention and it demonstrates how a campaign that targets mosquito populations and brings benefits that extends beyond the removal of the plague of mosquitoes in the form of better and dry roads, garbage removal and drainage systems need not necessarily more costly than some of the LLIN campaigns of the latter years. The comparison was made at the level cost per household. When only considering the larvicide component of the campaign, cost was far less LLIN campaigns and could be paid for by the decrease in spending in nuiscance relief products, such as pyrethrum spiral and similar, wintessed in the households as a consequence of the intervention.
The b.sphaericus granules had a good residual effect, as expected best in the septic tanks. They were made according to a very simple recipe on kitchen counters using food grade materials and kitchen appliances. The recipe is offered in the article. The campaign was run at low costs due to the hiring and training of young locals and effectively with the use of site mapping and tracking via GIS software.
Some of the measures were entirely without cost, like a modified cesspool lid that did not require breaking when the cesspool was evacuated. Cesspool were otherwise a major contributor of culine mosquitoes in the zones.
The study also showed that distribution of larvicides may be compatible with local commercial activities but the proper business model has to be identified in order to sustain it.
The study on cost and feasibility was published in Journal of Medical Entomology