Yes, worms castings are the most safe and natural fertilizer available. Worm castings are safe to handle and contain no chemical or unpleasant odor, as some may worry, just the slight scent of rich, fertile all natural soil, similar to the wonderful smell in a forest after a rain. The bacteria in the alimentary canal of the earthworm transforms the organic waste they consume, producing this terrific natural fertilizer. The chemical changes that the organic wastes undergo include deodorizing and neutralizing. This means that the pH of the castings is 7 (neutral) and the castings are odorless. The worm castings also contain the bacteria, so the process is continued in the soil, and microbiological activity is promoted. This organic fertilizer is safe! There is no need to fear overuse or misuse, they will not burn tender pants and roots, killing the plants off, as commercial fertilizers can. So you can rest assured using worm castings in your garden, potted plants, anywhere you grow you favorite vegetables or flowers, they are safe, natural, and 100% beneficial!