If you’re like most parents, you’ve probably tried everything to get pee out of a car seat. You’ve sprayed it with Febreze, used a vacuum cleaner, and even tried boiling water. But no matter how hard you try, your child’s seat always seems to smell rank. There is actually a pretty easy way to get pee out of a car seat: just pour some baking soda into the bottom of the seat and let it sit for about an hour. The baking soda will absorb the urine and make the smell go away. ..