NEA Stop Dengue Now - Ever wondered how long Bti and sand granular insecticides can last in water? Typically a Bti briquet can remain effective for about 30 days in places like
Le Bti, un insecticide inoffensif? | Radio-Canada
Bacillus thuringiensis (Bt) : insecticide biologique à bien utiliser
Bti (Bacillus thuringiensis israelensis) | Central Mass Mosquito Control Project
Moratoire demandé sur l'utilisation de l'insecticide Bti