Squeaky shoes are often caused by moisture or friction within parts of the shoe.
The easiest way to stop squeaky shoes is to use baby/talcum powder:
- If possible, remove the inner sole of the shoe and loosen the laces.
- Sprinkle baby/talcum powder on the underside of the innersole as well as inside the shoe.
- Let the powder sit overnight to absorb any moisture. Shake out the excess powder the following day.
If the squeaking persists and you believe there might be a manufacturing fault with your Merrell's, take them back to the place of purchase and consult a staff member.