Soda Crystals are also known as washing soda and are not to be confused with caustic soda. Before the advent of detergents, it was the main product used for both cleaning and laundry. Soda Crystals are ideal for removing grease and dirt, making them a true multi-purpose cleaner. If you are immersing your hands in them for any length of time, it\'s best to wear rubber gloves. Soda Crystals are extremely good value, with hundreds of uses including: Removing burnt on residue in pots and pans Helping keep sinks and drains fresh and blockage free Removing moss and algae from patios A floor cleaner with natural disinfecting properties. Soda Crystals are approved by DEFRA for the prevention of \'foot & mouth\' disease. Suitable for septic tanks Soda Crystals can also be used to soften the water in your washing machine. This means you\'ll need less detergent - saving you money - as well as helping remove stains. It will also help make your clothes softer. With regular use, Soda Crystals will also help keep your washing machine free of limescale and detergent build up. Tips on using Soda Crystals For more information on how you can use Soda Crystals, including dilutions, check out our article here.