Control pests in your home garden with Thuricide Concentrate from Bonide. The active ingredient, Bacillus thuringiensis (Bt) is a naturally occurring ingredient that provides effective insect control. Approved for organic gardening, this product can be applied up to the day of harvest. Thuricide controls moth larvae (caterpillars), certain leaf eating worms, gypsy moths and more. Apply to a variety of plants in your lawn and garden including vegetables, fruits, and nuts listed on the product label. This concentrated solution arrives ready to mix with water. To use, shake well and mix with water according to rates specified on product label. Apply thoroughly to upper and lower leaf surfaces using a hose-end sprayer, pressurized hand sprayer or mist blower. For full use instructions, please see product label.