I dunno about some of your belly buttons but mine is like it goes halfway into my guts so it can get pretty foul quick I have tried soap and other things like vinegar for proper bellyvaginal health nothing seemed to work as well as iodine the brown stuff just stuff it in there on a q tip every couple weeks its basically an anti germicide and will kill every nasty fucken grungy inside your belly cavity literally I think most of our well being and health depend on the flora and fauna of our gut and genitals and stuff so the better you take care of your self and are intuitive enough to experiment with methods that work then all the power to you nobody wants a foul belly button for those not blessed with an outy one