Remove the mattress and box spring from the frame.
Remove the side rails. Rub a stick of paraffin over the end surfaces of the rails. For beds that use wood slats to support the box spring, rub paraffin over the surface of the brace that supports the slats as well.
Inspect the attachment points for the side rails and bedposts. On most beds, the side rails slip into a slot in the bottom of the bedposts and are held in place with a toothed bracket. Use the appropriate tool--screwdriver, pliers or wrench--to adjust the bracket for a tighter fit to the bedpost.
Assemble the frame. Push the frame back and forth. Locate any remaining squeaks. Lubricate the friction points with paraffin or tighten the fittings as required.