How to clear a 2-year-old's nose?

Nasal congestion in 2-year-olds is quite common—usually from colds, allergens, or dry air. Physiological saline/spray (saltwater) can be applied several times a day; this thins mucus and makes clearing easier. Then gently suction with a rubber-bulb aspirator (nose pump). Elevating the head slightly when lying down (with a thin pillow under the crib mattress) and humidifying the room helps too. If using a cool mist humidifier, clean it daily. If congestion lasts longer than 10 days, is accompanied by fever, has thick yellow/green discharge, or is one-sided with foul-smelling drainage (possible foreign object), I recommend seeing your pediatrician. Avoid over-the-counter decongestant sprays for children under 2—they're only for doctor-recommended, short-term use.