Dry the shoes completely
Remove the insoles and let them air out
Sprinkle baby powder or cornstarch under the insoles
Apply a small amount of talcum powder between rubbing parts
Tighten loose laces
Check for loose insoles and secure them with double-sided tape
Rough up slippery soles with fine sandpaper
Apply leather conditioner to dry leather shoes
Use a silicone-based lubricant on squeaky seams
Replace worn-out insoles
Replace damaged heel pads
Let wet shoes dry naturally
Avoid wearing shoes on wet surfaces until fully dry
Take shoes to a cobbler if the squeak continues