How to Clean Superfeet Foot Insoles. Superfeet insoles go into shoes to provide enhanced support and comfort. While the insoles are designed to last approximately 12 months, it is recommended that you clean your insoles twice a week to keep them in good shape.

Make a solution of warm water and mild soap. Set the solution aside in a small bowl.

Remove the insole from your shoes and run it under lukewarm water until the entire insole is wet.

Rub the wet insole with the bar of mild soap until it's completely coated.

Dip a toothbrush in the bowl of soapy water. Brush the entire insole with the toothbrush.

Hold the insole under running lukewarm water until completely rinsed.

Place the insoles in a dry location with good air circulation. Allow them to sit for 24 hours before putting them back into your shoes.