1. 100% organic 2. Improves soil aeration 3. Enriches soil with micro-organisms (adding enzymes such as phosphate and cellulose) 4. Microbial activity in worm castings is 10 to 20 times higher than in the soil and organic matter that the worm ingests 5. Attracts deep-burrowing earthworms already present in the soil. 6. Increases the immune system of plants. 7. Easy to store and easy to use.