Run cold water down the drain with your garbage disposal for 30 seconds before you run your dishwasher. It will wash away any garbage caught in the disposal.Photo by Alex Garcia.
This garbage can get inside your dishwasher's cycle and make you have to run another wash cycle to get out the coffee grounds and other food garbage on your freshly washed dishes. Another benefit is less chance of garbage entering your dishwasher and blocking the drain line. (We'll grant you garbage disposals are a lot less common down under than in the US, but it's useful to know if you do run into one.)
How to Use Your Dishwasher to Save Money [Unplggd]