Try having a friend crouch near the floor and listen carefully while you walk.

If the inside of the shoe squeaks, lift the insoles and sprinkle powder along the inner seam. If your insoles are non-removable, rub the powder into the edge of your shoe base. Powder the tongue of the shoe under the laces if the tongue squeaks. If the base of the shoe squeaks, there are probably air cushions. Massage the powder into the base at the seam or air bubble. [1] X Research source

Don’t use oil-based materials on suede or the fuzzy nap could be destroyed.

Never use saddle soap on suede.

This will not work on urethane shoes. Take expensive high heels to a shoe repair shop instead to avoid the risk of damage.