Bacillus Thuringiensis Israelensis

Natural Fungicide
Bacillus thuringiensis israelensis Product Image

Bacillus Thuringiensis Israelensis

Biological larvicide effective control mosquito larvae and fungus gnat

Bacillus thuringiensis israelensis (bti) is a biological larvicide, effectively targets the larvae of mosquitoes (Culiseta longiareolate), fungus gnats (Bradysia impatiens), and black flies (Simulium vittatum Zetterstedt). When applying the gnat insecticide to aquatic habitats where these pests breed, it can control their populations while remaining safe for humans, pets, livestock, and beneficial insects. Where to buy bacillus thuringiensis israelensis for mosquito control, Novobac supply both wettable powder and suspension liquid larvicide products for your option.

Target Species

  • Mosquitoes (Culiseta longiareolate)
  • Fungus gnats (Bradysia impatiens)
  • Black fly (Simulium vittatum Zetterstedt)

Bacillus Thuringiensis Israelensis target insect

How does bti kill insects

Bacillus thuringiensis israelensis (bti) larvacide produces an insecticidal protein called the insecticidal crystal protein (ICP). When ingested by pest larvae, the ICP can paralyze their intestinal tract within minutes and cause the destruction of the intestinal lining, allowing the vegetative cells of the BTI to invade and cause sepsis.

This process leads to the death of the larvae from starvation and sepsis. The effects of biological larvicide are usually rapid, with some larvae dying within hours and complete larval mortality occurring within 24 hours. However, this mosquito killer product is only effective against pest larvae and will not affect pupae or adult mosquito. Late larval stages that are no longer actively feeding are also not affected by this bacteria.


  • Effective and fast-acting plant insect killer against larvae
  • killing them within 2-24 hours
  • Highly specific in its activity against mosquitoes and does not harm non-target organisms
  • Easy to mix in water and can be sprayed through various equipment types
  • Its effectiveness can be quickly assessed in the field

How to use bti for mosquitoes

  • Bti gnat insecticide can be applied to standing water using water dispersible granules or liquid formulations, diluted and sprayed by hand or with a spreader in smaller areas, or by using ground or aerial dispersal methods for larger areas.
  • Apply at a rate of 1 gram per square meter in the early stages of mosquito population development, with higher populations requiring double the dosage.
  • Reapplied after 8-12 days to extend its effectiveness for treatment
  • For optimal control of Lepidoptera pests, it is best to apply the product to pest eggs before the incubation period.
  • To ensure the best control effect, it is recommended to spray mosquito killer in the morning or on a cloudy day, and to reapply it if it rains within 6 hours after application.


  • Bacillus thuringiensis var israelensis does not persist in water or soil and is naturally present in soil. Its active ingredient and the protein crystals it produces will settle on the bottom of water bodies and break down organically or become food for other organisms.
  • BTI mosquito killer does not show cross resistance to chemical insecticides and can be applied in areas where resistance to organophosphates or pyrethroids has been observed.
  • The gnat insecticide is not poisonous to beneficial insects such as ladybugs, dragonflies, honeybees, and various types of flies, and does not harm aquatic creatures like Crustacea, oysters, shrimp, crabs, mollusks, flatworms, and Amphibia.
  • BTI-based biological larvicidehave been used in major mosquito and fungus gnats control programs for over 20 years without any reported harmful side effects.

Product Facts:

Available Specification

Water dispersible granules BTI IU 1200 WP or BTI IU 7000 TP

Liquid suspension BTI IU 400/ml or BTI IU 600 /ml

Active Ingredient

Bacillus thuringiensis subsecies israelensis

Formulation Type

Water Dispersible Granules & Liquid Suspension


BTI 1 kg per foil bag or 20 Liter per bottle

Shelf Life and Storage

24 months when stored properly in a cool and dry place.

Keep out of direct sunshine and moisture.

Once opened, use it within 30 days to prevent activation.

Stay away from children.


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