Well, I know you are not supposed to shower, but I tape (plastic tape) Saran Wrap over my catheter and take a quick shower and try not to put the spray directly on it. Although, they put this tegaderm HUGE piece of tape over it anyway, so with that and the saran wrap, I have done fine. BIG NOTE: After my shower, I use the blow dryer (low setting) to make sure any moisture is eliminated.But, you are NOT supposed to shower, so don't take my advise, I'm just telling you what "I" do.