MY o My Yuckie toothpaste...

I simply cannot think of a civilized way to tell my children the importance of keeping the toothpaste clean and in a clean place.
My tendency is to tyrade like my father and throw things around the house and then confess to God after I have made a complete fool of myself. I watched my father brush his teeth to a huge froth in his mouth and down the throat and "God help the child" who squeezed the toothpaste from the middle. It is soooo annoying. I hope that I am able to drill it into them before they get out of the house or before I have a stroke like him trying to drill civilized behavior into them in an uncivilized way.
So many reasons there are for keeping the toothpaste in a clean place and stopping touching it like they do. I think that I may invest in an individual toothpaste for each of the eight of us so that it is up to the user to be hygienic or not. I don't know what else to do.