Adding essential oils
A drop or two of citrus essential oil can add a light scent, but use sparingly. Oil and water don’t mix well, and overuse can lead to build-up over time.

If you still see water spots or cloudy glasses
Try reducing the amount of dishwasher powder used, checking filters and spray arms for blockages, running a cleaning cycle with just citric acid to remove built-up residue. Cloudiness is often a sign of hard water or residue already present in the machine.

Can I use vinegar instead
Yes, you can. In fact, I've recommended vinegar as a rinse aid in the past and still use it myself from time to time. Vinegar helps reduce mineral spotting and can improve the final rinse.

You may hear that regular use of vinegar contribute to wear on seals over time. The risk is often debated, and many people use vinegar for years without issue, but it's worth being aware of.

For that reason, I generally prefer citric acid. It serves a similar purpose, is odourless, easy to store, and gives you a more consistent and controlled solution.