Vectolex is a larvicide that can kill mosquitoes during the larvae stage of its development. Vectolex comes in a granule form that contains the bacteria Bacillus sphaericus . This bacteria damages the gut of mosquito larvae when they eat it, causing the larvae to starve to death. These granules can be placed directly in the standing water areas where mosquitoes breed, or can be mixed with water and other substances, and sprayed from the air or ground.
Direct contact can cause mild eye and skin irritation, but no known serious effects.
Mild skin and eye irritation can occur with direct contact, and it is best to keep children and pets away from areas that have been treated. The larvicides are being applied in storm drains, catch basins and other areas to which the general public does not have access. These areas drain into river water and sewage treatment plants. If the symptoms persist, first contact your local doctor or emergency department, then contact the New York City Poison Control Center.