Worm power is a certified organic fertilizer produced by millions of earthworms, raised under ideal conditions in an award-winning, state-of-the-art facility. in making worm power, dairy manure is converted by earthworms into safe, nutrient-dense, odor-free vermi-compost that raises soil fertility and increases plant performance. worm power shower brew bags allow home gardeners to make and feed their plants a top-quality liquid worm power fertilizer through-out the growing season. the brew bags present a no-mess, convenient, brew-it-yourself system that only requires a watering can. use liquid worm power extract on houseplants, container gardens, seedlings or garden beds. deliver nutrients to plant roots by moistening soil around the plant"s base or apply as a foliar spray. each mesh brew bag makes 1 gallon of liquid worm power extract. package of 5 brew bags.