“Although it looks quite revolting this is actually a good way of cleaning snot out of your nasal passages, allowing them to breathe through their noses (and hopefully everyone getting a better night’s sleep!)
“Please don’t use tap water, rather use saline which can be bought from a chemist.
“You need to hold their mouth open, and the saline should come out of the other nostril. Though some may go into their mouth, it doesn’t matter if some is swallowed.
“The key thing is to be gentle. If they are wriggling, you risk damaging the lining of the nose with the syringe itself and if they are crying or distressed it could lead to choking.
“So if they let you it is worth a try, but be gentle.”
There you have it! it might well be worth giving this a go if you can get your toddler to stay still, but make sure you use the right liquid (saline from a chemist) and beware that it might be tricky if you have a wriggler.