"You know, that’s not the worst idea," Harry mused, "it must be work intensive for them - especially for their potions that are most in demand. Surely it would be a better use of the healers’ time to be actually healing people rather than cleaning old potions vials. You could always offer it as a package service? You own the vials, so they return them to you, and you clean them and return them with new potions - only charge for a vial if they break it maybe? Be a large initial financial investment obviously, but it might help you persuade them to outsource,"