Calgon Antibacterial water softener gel is the first Calgon Limescale prevention gel that combines outstanding protection from limescale, residue, and odours with anti-bacterial ingredients to eliminate 99.9% of odour causing bacteria in your machine for a hygienically clean machine. It's suitable to be used alongside your washing liquid, washing capsules and washing powder. You can also use once a month in an empty wash for a hygienically clean washing machine.???Calgon Antibacterial Gel begins acting immediately to break down limescale and prevent dirt residue, leaving your washing machine healthy with every wash, protecting all elements of your washing machine that come into contact with water.