Dishwashing Liquid Extender

If you use dishwashing liquid I recommend getting the 2L budget stuff, tipping half into another container and topping the bottle up with a tablespoon of salt and 2 tablespoons of washing soda crystals and water. Theres a few benefits - makes it last way longer and the salt works as a scrub, the washing soda works as a water softener (which means using less detergent) and the washing soda is also a major grease buster!