The idea seemed good at the time ("Squeaky shoes! How cute!"). *Sigh*. From Sara:
Those fun yet annoying shoes that are supposed to encourage new walkers by squeaking each time they take a step are easy to come by at resale shops (I wonder why??? ) but I’ve found a couple of hacks to make them more bearable. Since the squeak is basically an air valve on the side of the sole, it can be temporarily blocked with a piece of tape or permanently blocked with glue. Take "permanently" lightly, though, because Miss J managed to figure out what was going on and pull the glue out of one of the valves. However, this points to another hack — the frequency of squeaks is cut in half if you block *one* of the shoe valves but not the other. A nice compromise, we’ve found.
Related: Muffling noisy toys