Tighten all bolts, screws, and fasteners on the bed frame
Check and tighten the headboard, footboard, and side rails
Add washers to loose joints
Lubricate metal contact points with silicone spray or wax
Place felt pads or rubber pads between rubbing parts
Inspect and tighten the mattress support slats
Add support brackets or center legs if needed
Replace cracked, warped, or damaged slats
Rotate or reposition the mattress
Move the bed away from the wall
Put a rug or anti-slip mat under the bed
Use wood glue on loose wooden joints
Wrap noisy joints with cloth, tape, or foam
Test each part separately to find the source of the squeak
Replace worn-out hardware or bed frame parts