Pillows can be a breeding ground for germs and bacteria, so regular washing is needed. Most pillows can be cleaned in a washing machine in warm water at a gentle cycle. However, it's still better to err on the side of caution and check the care label before putting your pillow in.
Pillows with cotton, feather and down fillings can typically be machine-washed. On the other hand, foam pillows are too delicate for a washing machine. Instead, you can remove your foam pillow's cover and vacuum it up to remove dirt and dust.
To ensure your pillows are fresh and clean, they need a good, deep clean every 6 months. As for pillowcases, you can wash them with your beddings weekly.