If you've ever had to mop a floor, then you'll know all to well how clinical and clean water you start off with becomes murky after a couple of swipes and dunks.
And if you - like many - only have one mop and one bucket which you keep dunking the tool back into, you're just realistically picking dirt up and redistributing it all over your room.
On the other hand, if you keep on changing the water and adding fresh soap or detergent - you can soon end up spending a small fortune just to clean a small kitchen or hallway. After all, amid the cost of living crisis, using less hot water and cleaning products can make your money stretch further.