Control worms and caterpillars in your lawn and garden with Captain Jack's Bt Bacillus Thuringiensis Ready-to-Use Spray. Approved for organic gardening, this product can be applied to edible plants up to the day of harvest. Apply to fruit, vegetables, ornamentals, shade trees and more to control bagworm, tent caterpillars, gypsy moths and more. When used as directed, this product will not affect birds, earthworms or beneficial insects.