We have danced for several years and absolutely hate any form of additives to a dancing surface, ie; dance wax, dusting,oils,powders,or even corn meal. If we do encounter this "stuff" we generally sand or brush our dance shoes often enough that is makes a diference. Some times we intentionally dance through the "stuff" and move to an outer part of the facility to carpet where we scrape off the material then continue only missing a measure or two. Do it enough and get your friends to do it and the "stuff" quickly vanishes and good SAFE dancing can continue. Alternatively, hide the materials from the applicatee.