SCRAP Worm Casting is a great soil conditioner containing many microorganisms, mild acids and even baby worms to enhance your garden. Not sure about it? Never used it before? Try this 4 litre sample in a pot plant of 12 litres (at a 30% mix with sand, compost, mulch or regular potting mix and see the difference – we think you will be coming back for more. Then you will want a worm farm and worms to make your own!