For twenty years we have preached to our Gard’n Gro buyers that their soil is alive with microorganisms that maintain the fertility of their garden’s ecosystem. That ecosystem also maximizes the disease resistance of your plants. That ecosystem is threatened by the use of toxic chlorine. Free chlorine (CL2) cannot tell the difference between harmful pathogenic bacteria and the beneficial bacteria in your garden’s soil. Ask any commercial nursery about your soil‘s ecosystem. They will agree with Rainshow’r that it needs to be protected. The Rainshow’r® Gard’n Gro dechlorinator keeps your plants healthier by removing the chlorine that kills beneficial bacteria in your garden soil.