Okay, they're boogers, I said it! A dozen Cool Baby Test parents and pediatricians have raved about this tip to prevent colds, boogers, and congestion in babies: simply buy an inexpensive bottle of all natural saline spray (a good trustworthy brand is Ocean Nasal Spray, approx. $3) at your local pharmacy and gently drop one or two drops into baby's nostrils. Loosens dried "nose debris" so that you can use an aspirator to suck out said debris and also helps balance ph levels so that bacteria is less likely to grow. Also soothes sore or dry nasal membranes for babies and adults.