WormGold Plus is an ultra-premium worm castings that are produced by worms fed a specific diet rich in chitin, producing castings with an elevated level of recycling organisms called chitin and cellulose degraders. Other worm castings produced from commercial factory-farmed animal manures have waste pathogens & pesticide residues. Wormgold Plus is 100% organic, non-toxic, pathogen free, and no chemicals. WormGold Plus worm castings are also supplemented with extra soil super-chargers in the form of (3%) fossilized kelp with additional (3%) colloidal rock dust.