text: Because of all the good reviews i thought I'd try this even though i was sceptical. I've tried on several different pairs of shoes and have not noticed even a little deference even after two trys and walking around for half an hour each.  Honestly the $10 one at Walmart everyone complains about has work much, much better and i wish i had invested the money an another $10 one so i could do a pair at the same time.