Buy Himalayan Black Salt (Kala Namak) in bulk. A natural mineral salt widely used in Indian cooking, vegan recipes, and seasoning, with a unique sulphur-rich flavour.
I applied this to my lawn with a watering can at the recommended strength and just one application seems to have killed the moss. To make sure I'll give it a good rake and then another application. The grass is looking healthier and greener as is advertised. A good sized pack for the money and postage was fast and I recommend this product and the supplier.