Meet SILVER BULLET from Key to Life nutrients in Broomfield, Colorado. This company really has it together and this product rocks! Silver Bullet is sold as a plant supplement and is used not only in feeding cycles but also as a foliar spray where this product continues to shine! As a secondary macro-nutrient, sulphur is fundamental in chloroplast production and function. Sulphur is also a structural component of some amino acids and vitamins that plants need. Aside from being absorbed and utilized by the plant as a foliar feed, when sprayed on plants as part of your IPM, or Integrated Pest Management schedule, you will see that bugs hate sulphur, especially mites! This product is a huge customer favorite!