Brett writes
BTI Mosquito Dunks treat the surface of the water, so because if this, the depth of water does not matter. They are placed in areas with standing water that are mosquito breeding sites. As the briquets float, BTI (or bacillus thuringiensis israelensis, a natural mosquito-killing biocontrol agent) is slowly released at the water’s surface and gradually settles in the water where it is consumed mosquito larvae.
Answer last updated on: 02/13/2019