Well Kathy, you and your husband sure figured out a way to beat the steep cost of percussion vests. Congratulations. My mucous clearing episodes, unlike yours, almost always occur in unannounced "obligatory" episodes of several minutes when I'm essentially out-of-commission for any other activity. Fortunately they seem to occur predominately at bed time. Also fortunately my wife's a night owl so is minimally bothered by the clamor I make.