Always put infants to bed on their back on a firm, flat mattress.
Make sure crib slats aren't more than 2 3/8 inches apart -- a child's head could slip through wider openings and get caught. (If you're borrowing a crib from a friend or purchasing a used crib, it's a good idea to check with the Consumer Product Safety Commission to ensure that the model hasn't been recalled.)
Use fitted sheets and make sure they snugly cover the mattress, especially after washing. If a sheet comes off easily when you pull at the corners or sides, don't use it.
Take down crib gyms and mobiles as soon as your baby can pull herself up the side of the crib into a standing position.
Throw out plastic shopping, trash, and dry-cleaning bags as soon as possible -- never leave them within your child's reach.
Remove hood cords and drawstrings from all of your child's clothing.
Tie up window-blind cords and long telephone cords. If blind cords have loops, it's a good idea to replace them with tassels. Check to see whether the cord dangles within a child's reach. If it does, tether it to the wall or a window jamb.
Move furniture, especially a crib or a child's bed, away from windows with hanging blind cords.
Put a baby to sleep on a waterbed, a sofa, a pillow, or another soft surface.