6. Moisturize the Air.
This is a quick fix that can actually improve the quality of the air in your house and it can have many health benefits as well. However, the use of a humidifier can be your best friend in the cold weather months when the air in the house is dry. When you sleep at night, there is a good chance that you sleep with an open mouth at some point, which is how your dry mouth could be starting in the first place. While you cannot change what you do when you sleep at night, you can change the humidity of the air in your room so that when you open your mouth in your sleep, you take in moist, warm air.