Monterey Ready to Use B.t. (Qt)

Monterey Ready to Use B.t. is a one-quart biological insecticide formulated with Bacillus thuringiensis subspecies kurstaki for controlling caterpillar larvae listed on the product label. The premixed spray is convenient for small gardens and spot treatments because no measuring or dilution is required. It is intended for use on labeled vegetables, fruits, shade trees, and ornamentals against targets such as loopers, hornworms, imported cabbageworms, and other susceptible leaf-feeding caterpillars.

B.t. must be eaten by actively feeding larvae, so timing matters. Inspect plants regularly and treat young caterpillars when damage first appears, following the label’s crop-specific directions. Apply enough spray to cover the foliage where larvae are feeding, including leaf surfaces that may be overlooked. Rain, new growth, and continued egg hatch can affect coverage and the need for another application. B.t. is selective compared with broad-spectrum insecticides, but it should still be applied only to labeled crops and pests.

• One-quart ready-to-use spray
• No mixing or dilution required
• Targets listed caterpillar larvae
• OMRI Listed for use in organic production

Read and follow the current Product Label for permitted crops, application timing, harvest restrictions, precautions, and storage. Review the Safety Data Sheet before handling. Browse related products in our Pest Control collection.