1 pint. Tomato hornworms attacking your beautiful tomatoes? Fight back with Bacillus thuringiensis! This naturally soil-occurring bacterium paralyzes the digestive tract of insects including caterpillars, loopers, cabbage worms, and leafhoppers. Won't harm beneficial insects, animals, or humans. One pint makes 24-32 gallons of finished spray. Treats up to 10,660 square feet. Organic Materials Review Institute (OMRI) listed.