MO Bacter is an Organic Fertiliser which will feed your lawn for 100 days, stimulating fresh grass growth and destroying moss without turning it black, therefore, removing the need for raking out the dead moss. It does not contain any chemicals, it destroys the moss by secondary action. It does contain a very safe bacteria which is found normally in the soil. This eats dead organic matter and converts it into plant food. It will not scorch the lawn even if it does not rain after application. N-P-K 5-5 (+3).