I addressed squeaky orthotics in a prior post https://drshoe.wordpress.com/2007/12/27/squeeky-orthotics/ which illustrates how to apply tape on the underside of an orthotic to stop squeak.
Reader Sarah read this and asks “I have tried this many times, and the tape always comes off. Hockey tape gets all gooey and comes off in a lump, as well as leaving your shoe quite sticky. Masking tape just wears off. What tape works well?”
When tape works to eliminate squeak but won’t stay put, the best thing to do is have your podiatrist permanently glue a piece of leather or vinyl to the underside of the orthotic in the same place where the tape was. Typically Barge (shoemakers waterproof glue) is used. If your podiatrist doesn’t have the necessary materials then your local shoe repair store will.