Larviciding is the process of killing mosquito larvae before they have a chance to mature into adults. This can be done using a variety of methods.
Larviciding is an essential part of malaria vector control programmes in Africa as it can help to reduce the number of adult mosquitoes that are able to transmit the disease. This is particularly important in areas where there is a high risk of malaria transmission and at specific times of the year such as prior to and during rainy seasons when mosquito populations can explode.
When applying to water tables or wetlands(water sources), it is important to use a non-toxic and bio-degradable products like BUGSTOP™ LARVEX 100™ which uses natural oils (a mono molecular oil film) and when dispersed onto the surface of the water spreads to form a film on the water that stops mosquito eggs from falling into the water, and also starves mosquito larvae by preventing it from breaking the oil film surface to get oxygen.
The other biological product is BUGSTOP™(Bti) WG (Bacillus thuringiensis israelensis var.) presented as WDG (wettable dissolvable granules).
The Bti bacterium produces a protein crystal which is toxic only to mosquito larvae. Mosquito larvae ingest these microscopic crystals when they are feeding. The crystals then dissolve and are converted into toxic protein molecules that destroy the walls of the mosquito larvae's stomach. The larvae usually stop feeding within hours and die within days.
BUGSTOP™ Pirimiphos-methyl 50 EC is an Emulsifiable Concentrate used as a larvicide to control a wide range of disease-carrying and nuisance pests, including mosquitoes, ants, flies, cockroaches, fleas and other crawling insects. Effective against insects resistant to other organophosphates, pyrethroid, carbamate, and biological insecticides. Available as an easy-to-use, emulsifiable concentrate formulation containing 500 g/L (50EC).
The results can be dramatic and form a critical element of any mosquito control programme alongside indoor residual spraying, fogging and the use of long-lasting insecticide-impregnated bed nets.
The World Health Organisation has said that it can reduce cases of malaria by up to 90%.
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