It is best to avoid relying on a used car seat. If you must buy a used one, be sure to check the following: Most recommend against using a car seat that is more than five years old. You should check with...
My mother rolls her eyes when I talk about this, but it's true - ask any pediatrician. The rampant overuse of carseats, strollers, infant swings and bouncer seats has caused a marked increase in the occurence...