You know that little compartment in the dishwasher for rinsing solution? It’s usually marked as “Rinse Aid.” Confession: I've always ignored it. That's because I didn't know what rinse aid was, and I ...

To clean well, dishwashers need very soft water. This is where dishwasher salt comes in. When it comes to ensuring your plates, cutlery and plastic containers come out bone dry, rinse aid is the key.

If you own a dishwasher then you'll no doubt regularly keep your machine topped up with rinse aid. But do you know what it ...