Duplo Bt - 1L

Duplo BT is a highly concentrated biological insecticide containing two premium strains of Bacillus thuringiensis — nature’s most effective caterpillar and moth control agent. 

Registered for False Codling Moth in roses but also highly effective against diamondback moth, fall armyworm, cabbage looper, stem borers and other caterpillar pests across a wide range of crops. No chemical residues.

Key Details

• Active Ingredient: Two strains of Bacillus thuringiensis (Bt).
• Target Pest: Primarily used against Tuta absoluta (tomato leafminer) larvae during damaging developmental stages.
• Function: Acts as a biological control agent within an Integrated Pest Management (IPM) program to protect crop yields and reduce chemical residues.

Key Benefits

• Fast feeding cessation — larvae stop feeding within hours of ingesting treated plant material, dramatically reducing crop damage even before the larvae die
• Completely safe for beneficial insects — bees, predatory wasps, lacewings, ladybirds and parasitoids are completely unaffected; unlike broad-spectrum chemicals, Duplo BT preserves your farm’s natural pest control allies
• Zero pre-harvest interval — no waiting period before harvest; flowers, vegetables and fruit can be picked immediately after application
• No resistance to chemistry — resistance does not develop to Bt in the same way it develops to synthetic chemicals, making it an important tool in resistance management programmes